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The Bass Track

An independent bass line following the progression. No stepper here - the bass evolves through Improv, a probability system: you set how often it strays and how far, and the result is seeded, so the same settings replay the same way. Variation without randomness-for-its-own-sake.

Improv probability

Button One line
LOAD Seed a bass line from 50 presets across 5 style categories - a starting point, not a cage.
IMPROV The probability controls: how often the line strays, and how far.
PARAMS The bass track's full parameter list, including the IMPROV category.
CAPTURE Record your own line from the keyboard - same record flow as melody.

Lock-param edits land immediately - the change happens on the next tick, not the next chord change, so you can tweak Lock settings while the bass is playing and hear the result in real time.

Manual Ch 11 - Bass Mode for the preset categories, the Improv parameters in detail, and the worked recipes.