sqsl Mantra

Experimental MIDI sequencer/pattern generator designed for iPhones.

// FEATURES

- 3 tracks (A, B, C)
- Triggers for each track (3 × 8 triggers)
- Pitch values shared across tracks (row of 8 values)
- Heptatonic scales quantizer (5 scale patterns × 7 modes × 12 roots)
- Scale morphing using Triadic transformations
- Degree mask per track (exclusion of specific degrees from the scale)
- Degree shift (degree transposition) per track
- Gate length per track
- Track length control for Track A and Track B (with optional reset synced to Track C)
- Track C Pause control (Track C will wait 0-8 steps before looping back to start)
- Clock divider per track
- Random step jump per track (probability)
- Clock acceleration linked to B Track's playhead position
- Swing and BPM clock control
- Velocity and MIDI channel (1–3) per track
- Velocity can be modulated by LFO (per track) with Rate and Amount control
- Pattern evolution synced to Track C loop
- Evolution has selectable groups of processes/transformations
- Variations generator based on current pattern and evolution settings (16 x 4 variations)
- Optional automatic capture of output to .MID files (synchronized to Play button)

// EVOLUTION

When evolution is triggered (Track C loop), it will randomly select one of the enabled transformation groups and apply one of the transformations contained in that group. Transformation groups can also be "locked-in" so they happen each time when evolution is triggered.

List of available groups and transformations within them:

PITCH
- The order of pitch values is reversed
- Two pitch values are swapped

TRIGS
- Two trigger states are swapped (within a single track)
- Trigger patterns of two tracks are swapped
- The trigger pattern of a single track is reversed

SHIFT
- The degree is shifted randomly on a single track

MORPH
- One of the 3 triads defining currently selected scale is rotated (replaced MODE transformation from previous version)

PAUSE
- Empty steps are added at the end of track C (0-8)

FLIP
- The pitch values of single track are inverted
- The pitch values of all tracks are inverted

STEPS
- The track length of A or B track is randomized

MASK
- The degree mask is shifted horizontally by one step (left or right)

BPM
- BPM is halved or doubled
- BPM is inverted (120 BPM taken as the axis)
- BPM jumps to a random value

READ 1ST
- First variation on current variation page is loaded (this transformation is excluded from variation generation).

ACCELERATE
- Acceleration parameters is randomized (speed up of clock depending on Track B playhead position)

RANDOM POSITION A
- Random step parameter of Track A is randomized

// PRESETS

There are 5 × 24 available slots for user presets. BPM and scale settings can be ignored when loading a preset. Evolution variations (64) are saved within presets.

// SAVING TO MIDI FILES

Output can be automatically saved to a .MID type. File will be located at the “On My iPhone/sqsl Mantra” folder and named using the cu