Tracks tab

  1. Introduction
  2. Common controls
  3. Track Editor
  4. Bar Editor
  5. Piano roll editor
  6. Step Sequencer
  7. Quantization popup
  8. Tempo popup

1. Introduction


Similar to the keyboard tab, sliding and pinching on the menu bar scrolls and zooms the visible range of the song.

What is a track?

Each track represents a single instrument in the project. Tracks hold recorded notes (Piano and Step), Audio and automation parameters (Filter). You can use the same instrument type across multiple tracks but with different parameters (e.g. volume, pan, attack/release time and of course, notes).

Filter tracks appear only if a filter effect is set as a track, shared or master effect. To record filter automation, move the crosshair in the filter effect window during recording. The 2 lines represent the cutoff frequency and the resonance. Muting a filter track prohibits it from being played back, allowing you to experiment with new filter settings.

Track management

Only one track can be selected at a time. The keyboard will play this tracks instrument. The record button will record to this track, and all the changes you make in the instrument tab will apply to it. You cannot delete the first track, the maximum number of tracks is 128.

What is an event?

A recorded note places 2 events on a track: key-down and key-up (also called note-on and note-off). The position of an event is stored with a resolution of 48 ticks per beat, which equals to 192 ticks per bar with a signature of 4/4, meaning that the shortest note can be a 1/192nd.

2. Common controls


Starts and pauses playback of the song. Playback will start from the pause position.


Stops playback and rewinds the playhead to the start of the track.

Loop button

If looping is active and the playhead reaches the right song marker (by default the song end), it will jump to the left marker and continue playback from there. This allows you to loop any part of the song, the markers can be moved in the song ruler.

Undo button

Tap to undo the previous action. Hold for 2 seconds to display a popup with the possible undo/redo actions. If the result would not be obvious, the popup appears anyway (e.g. if you would undo a recording but switched to the tracks tab, or if only redo is possible). Selection does not count as an action.


The LCD displays the position of the playhead in the format measure-dot-beat, e.g. 7.2 means that the playhead is in the 2nd beat of the 7th bar (measure). The display also shows parameter values (pan, volume, transposition) while you are changing them, and the currently selected note range in the piano roll editor.

Tempo Button

Toggles the tempo popup.

Zoom button

Toggles the zoom mode.

Track view switches

Switches between the Track Editor, Bar Editor, Piano roll editor or Step Sequencer. The last two buttons grouped in blue (left) are interchangeable depending on the selected track.

Tempo indicator

Displays the song tempo, BPM stands for beats per minute. Double tap it to enter the tempo popup.

Song ruler

The numbers and the vertical lines indicate the measures (bars), the short vertical lines are beats. The ruler also holds the playhead (white vertical line) and the markers (triangles). Slide anywhere on the ruler to position the playhead.

Song markers

The left and right song makers are located on the ruler and can be moved to a certain song position.

Why markers? Recording always starts at the left marker. The loop button loops the section between the markers. When exporting to a wav file, you can choose to only export the range between the markers.

Zoom mode

In this mode, the view (i.e. the ruler) can be scrolled and resized anywhere on the screen.

Horizontal zoom buttons

Zoom the ruler in or out. Tap the zoom-out button a few times to view the whole song.

Vertical zoom buttons

Only visible in the piano roll editor for zooming the mini keyboard.

Navigation map

Tap or slide it to quickly position the viewed range. Areas outside the visible range are darkened. The map also displays the current track's notes as white lines.

3. Track Editor

The Track Editor is designed to edit whole tracks and set their volume and pan.

Track list

The track list allows you to select a track and scroll the list of tracks. Each track row holds its number, instrument icon, mute/solo/fx icons (see below) and the recorded notes as lines. Move your finger across the note area to scroll the playhead and get an audio preview. Double tap any region of a track to enter the piano roll editor.

Congruent (identical) notes are marked red. Delete congruent notes or move them to an other track.

Rearranging tracks and changing the color

Tap and hold a track’s instrument icon for 1 second. A tip box will appear, instructing you to slide vertically to move the track or horizontally to change the track’s color.

Gain bars

These 2 green bars show the track's output gain for the left and right stereo channel, allowing you to see the volume and pan for each track at one glance. If the pan is centered, both bars have the same height.

Filter track

The filter track appears only if the filter effect is enabled. The 2 lines represent the cutoff frequency and the resonance, like in the filter's panel. With the filter track selected, only the mute and the delete buttons are enabled. Muting the filter track prohibits it from being played back, allowing you to experiment with new filter settings.

Add track button

The add track buttons are located at the end of the track list. It adds a new track with the current instrument to the bottom of the list of the type selected - Piano roll or Step Sequencer. NOTE: The Audio track type is currently iOS only.

Mute button

Mutes the selected track, excluding it from playback. Muted tracks are darkened and are indicated by the mute icon.

Solo button

If one or more tracks are switched to solo, all non-solo tracks will be excluded from playback.

FX button

Opens the Effects (FX) for the selected track. The FX icon next to the track icon indicates each track's FX state.

Edit button

Opens the Step Sequencer or Piano roll editor for the selected track.

Duplicate button

Duplicates the selected track, thereby copying its parameters and recorded notes.

Delete button

Brings up a popup with the options to deleted or clear a track. Clear will delete its notes but leave the track in the list. Delete will remove the track from the list.

If the track holds pitch bend events, a checkbox for clearing only the pitch bend data appears.

Pan slider and volume slider

Bar Editor

The Bar Editor is designed for quick, bar-wise editing of the song. Select a range of bars (measures) and delete, repeat, move, or transpose them.

Track list

The Bar Editor's track list is almost identical to the Track Editor's track list. Since the Bar Editor edits bars, track selection is not possible and the current track is not highlighted. Tapping a track's instrument icon will select all bars on the track.

New selection button

Clears the current selection and starts a new one. Tap it, then draw a rectangle on the note area in order to select bars. Selected bars are highlighted white and their notes are colored dark blue. Tap a track's instrument icon to select the whole track.

Change selection button

Adds or subtracts bars from an existing selection. Tap the button, then tap an unselected bar to add it to the selection (swiping does not work in this mode), or a selected bar to deselect it. Tap a track's instrument icon to (de)select the whole track.

Copy/Paste pop-up buttons

To Copy - Make a selection then tap and hold the selection, when the Copy button appears tap copy. To Paste - Make a paste location selection, then tap and hold on the paste location, when the Copy/Paste button appears tap Paste.

NOTE: The clipboard holds a selection of bars which is retained even if another project is loaded. To copy something from one song into another

Move button

Activates the move mode where the selected bars can be dragged around. The song length can be increased by moving bars past the song end.

Duplicate button

Duplicates the selected bars and selects the new ones which can be moved around immediately. The copied notes will appear red until they are moved, because they are congruent (identical) with the originals.

Repeat button

Duplicates the selected bars and moves them to the right so that they start where the selection ended. The song length is automatically increased if the new bars reach past the song end.

Transpose button

Brings up the transpose menu which allows you to change the tone pitch of the selected bars. The semitone buttons de/increase it by one semitone, the octave buttons by 12 semitones. The LCD displays the number of semitones currently transposed.

Quantize button

Tap the quantize button to bring up the quantization popup for quantizing the selected bars.

Edit button

Switches to the piano roll editor for the selected track. This button is disabled if the selection encompasses more than one track.

Delete button

Deletes the notes in the selected bars.

Bar edit button

Toggles the song bar edit mode where whole bars can be inserted and cut from the song. Tap anywhere to select a bar of the song (not just of individual tracks), which gets highlighted in red. The cut button deletes all notes in the selected bar and cuts it, i.e. shifts all later notes one bar to left and decreases the song length by 1 bar. The insert button inserts an empty bar at the position of the vertical line left to the red area. This means that the song length is increased by 1 bar and all notes to the right of the line are shifted one bar to the right.

Automation Events

Events can be selected, moved, duplicated, repeated and deleted just as with note data.

5. Piano roll editor

5 Piano roll view

In contrast to the Track Editor and the Bar Editor screen, the piano roll editor displays only one track. The horizontal song ruler is still the same, but the vertical axis now represents keys. The mini keyboard on the left serves as a ruler for the note pitch. The background has the track's color scheme, where the dark stripes represent black notes. White horizontal lines between B and C keys mark the octaves. Notes are displayed as blocks, the color indicates the volume (velocity) from dark blue (quiet) to green (default) to yellow (loudest).

Congruent (identical) notes are marked red. Congruent notes result in higher note volume. Delete congruent notes to an additional track.

Notes with pitch bend data show as curved lines:

Vertical scrolling

Slide vertically on the mini keyboard to scroll and do the pinch gesture to zoom vertically. At low zoom factors, selecting individual notes is nearly impossible, but of course greater note ranges can be selected at once.

Draw button

Tap it to enable the draw mode. Move the note-cursor (gray), set its length with the quantize buttons and tap draw. Move it, size it and tap draw. When completed press done.

Draw mode

In the draw mode, notes can manually added without the need to record live playing. A 'Done' button and a new menu will appear when you tap 'Draw' (pencil icon) button. Underneath the Piano roll the grey note-cursor is the note that will be added if you tap 'Draw'. In detail:

  1. Drag the gray note-cursor (show above) to the desired position.
  2. Set the desired length with the 'Draw mode note buttons' along the lower left of the display.
  3. Tap 'Draw' to add the note. The gray note-cursor will still be over the drawn note. Tapping Draw again without moving the cursor will layer notes.
  4. Drag the cursor to a new location and add another note by tapping 'Draw". Repeat steps 1-4 until your melody or rhythm is complete.
  5. Tap 'Done' to exit Draw mode


Draw mode note buttons

Tap the desired button to set the note length to be drawn. 1/4 notes = 1 beat.

Draw mode dotted button

Increases the note length by 50%.

Quantized drawing button

Quantizes the new note even before it is drawn. If this button is enabled, the note snaps to a grid defined by the selected note button.

New selection button

Single-tap - Clears the current selection and starts a new one. Tap it, then drag a rectangle to select notes. Double-tap - Selects all notes. Selected notes are highlighted and the note range of the whole selection is displayed in the LCD.

Change selection button

Adds or subtracts notes from an existing selection. Tap the button, then select a range to toggle it.

Move button

Activates the move mode where the selected notes can be dragged around.

The buttons in the menu (notes, dotted, done) have the same function as in draw mode. The OFF button disables quantization and allows for (almost continuous) movement with 1/192nd precision.

Tap one of the lock buttons to lock horizontal or vertical movement, which is very useful if you intend to move or transpose only.

Duplicate button

Duplicates the selected notes and selects the new ones which can be moved around immediately. The copied notes will appear red until they are moved, because they are congruent (identical) with the originals.

Important: Not moving the new notes will cause them to be identical (colored red) to the originals. They will be played back with increased volume.

Length button

Tap it to enable the length edit mode which brings up a new menu. The buttons in this menu (notes, dotted, quantize, done) have the same function as in draw mode. Either tap a note button to set the length of all selected notes to an absolute value, or move your finger horizontally to de/increase the relative length.

Volume button

Toggles the volume mode where the volume (also called key velocity) of the selected notes can be modified by moving your finger vertically. The LCD displays the current volume of the first selected note, ranging from 0 to 127 (default is 100). The note color indicates the volume from dark blue (quiet) to green (default) to yellow (loudest).

Quantize button

Brings up the quantization popup for quantizing the selected notes.

Delete button

Deletes the selected notes.

6. Step Sequencer

The Step Sequencer allows you to create beat-oriented patterns with speed and accuracy. Each bar is divided into beats and each beat into steps (these are the buttons). Simply tap on the step to activate or deactivate it.

The number of bars shown in the Step Sequencer equal the total length of bars in the project.

    1. The add bar icon is on the lower right of the step-sequencer tab so you may need to scroll to the right-most bar (swipe left on the tabs area) and bottom channel (swipe up on the channel buttons) if it is not visible.
    2. Tap on the (+) icon on the lower right of the display.

Channel Button Popup

Click on a Channel button to open the popup for that Channel with the following options:

  1. Panning and dynamics controls.
  2. Load sample menu - Select from other samples in the instrument. You can't select samples from other instruments. To use these, load the desired instrument to the project. 2b - When using user created kits the menu is replaced with the Full note lengths switch that allows samples to play for their full duration.
  3. Step resolution - This sets the number of steps per beat. 1/16 means each bar is divided into 16 steps or 4 per beat. 1/32 would mean 8 steps per beat or 32 per bar.
  4. Swing - A 'swing' rhythm holds the 1st and 3rd 1/16th note in each beat at the expense of the 2nd and 4th. Swing is cool and is an important rhythmical element in Hip Hop/Jazz/Rap etc. The control determines the amount of swing in terms of swing in 5% steps. Awesome, coolness added in 5% increments! Reset - double-tap.
  5. Delete Channel - Undo is available.
  6. Solo Channel - Sets the volume of all other channels in the instrument off.
  7. Graph Editor mode - Each step has Volume and Pitch settings available (see below).
  8. Close popup - You can also tap on the channel area to the left of the pop-up.

NOTES: While the pop-up is open you can select channel buttons visible down the left side of the window to change the edited channel without closing it. The selected channels steps are also visible above the pop-up for editing while it is open.

Velocity & Pitch Editors

Click the Graph Editor Mode button (see above) to open Velocity and Pitch editors for the selected Channel.

Only active steps can be edited by tapping and dragging on the graph editors.

7. Quantization popup

Quantization is the most important step after recording because it corrects the timing. If the quantization raster (resolution) is one quarter note, every selected note is moved to the nearest raster point in a 1/4 note raster. The selection of the right raster is crucial, therefore you might want to try out different settings for each recording. For example, if you played a rather fast melody and quantized it to 1/4, the timing will be ruined - in this case, just tap the undo button and try again with a higher resolution like 1/16. On the other hand, quantizing notes with a high resolution might not correct all timing errors you made when recording them.

Note buttons

Set the quantization raster (or resolution) by selecting a note. In practice, low resolutions like 1/4 are the right choice for slow notes like the background cello in the demo "Canon in D (Pachelbel)". 1/16 fits to most melodies, while at 1/32 you will only notice the difference if you recorded fast notes (like a fast drum pattern) or at a low tempo setting.

Dotted button

Increases the quantization raster by 50%. For example if you selected 1/8 dotted, the quantization resolution is 1/6 of a bar.

Triplet button

Treats the notes as triplets, meaning that the raster interval is multiplied by 2/3. This allows for more swing and quantization of Jazz style melodies. Naturally, dotted and triplet cannot be enabled at the same time.

Note length checkbox

If checked, note lengths will also be quantized, meaning that every note length will be an integer multiple of the selected quantization. This is especially useful if you want to enforce legato.

Soft (humanize) checkbox

If you want to keep a human touch to the recording, soft quantization will shift every note by just 50%, keeping it slightly off the perfect timing.

8. Tempo popup


Tap or hold the +/- buttons to change the tempo in the range of 40 to 240 BPM (beats per minute). A faster way to set the tempo is to tap and slide the value on the LCD.

An alternative tempo input method is to tap the Tap Tempo button with the desired tempo for at least two times.

Hold the Preview button to hear a metronome preview of the current tempo and signature.


The song signature can be set to a value between 2/4 and 7/4. Most songs have a signature of 4/4, meaning that 1 bar has 4 beats (i.e. the length of 4 quarter notes).

Hold the Preview button to hear a metronome preview of the current tempo and signature.