MothOS Ver 1.1.0+
Long hold function buttons for these actions:

Live/Tracker

Rec On/Off

Load Song

Save Song

Short press function button + another button for these actions:

Function 1

Octave -1

Solo Track

Track 1

Note Long

Function 2

Octave 0

Change Vol

Track 2

Note Med

Function 3

Octave 1

Overdrive

Track 3

Note Short

Function 4

Octave 2

Solo

Track 4

Play On/Off

Synth 7

Steady

Clr Trk 1

BPM 120

Synth 8

Fade-In

Clr Trk 2

BPM 132

Synth 9

Fade-Out

Clr Trk 3

BPM 145

Synth 10

Sustain

Clr Trk 4

BPM 180

Synth 3

Echo

Pattern 1

Copy Pat

Synth 4

Chord Arp

Pattern 2

Paste Pat

Synth 5

Wobble

Pattern 3

Paste All

Synth 6

Pitch Up/Dn

Pattern 4

Note/Samp

Drums

FX Off

Clr Pat 1

New Song Short Pat

SFX

FX LowPass

Clr Pat 3

New Song Long Pat

Synth 1

FX Retrig

Clr Pat 3

Master Vol

Synth 2

FX Tape

Clr Pat 4

Pat/Song

Cheatsheet:

Press and release a function button (top row) and then press any other button to execute a function (switch tracks, change volume, set effect, etc).

For example, press Fnc1 (led should light up), and then press any of buttons in the lower 3 rows to change instruments.

Press Fnc3 and then any of the top row buttons to switch tracks.

Tracks are quantized to 8 notes per bar, patterns can be set to 4 or 8 bars each, 4 total patters are available in "Song" mode, Fnc4 + D# to switch between song and pattern modes.