Parameter locks let every sequencer trig carry its own unique parameter values

A parameter lock (p-lock) is a per-step override of any track parameter. Without p-locks the sequencer plays every step with the same settings; with them, each trig can have its own pitch, filter cutoff, sample start, amplitude envelope, LFO depth — any of the ~80 lockable parameters. In Grid Recording mode: hold a trig, turn the relevant knob — the display inverts for the locked parameter. In Live Recording mode: turning any knob while the sequencer runs writes locks automatically. In Step Recording mode: hold a trig and dial. A locked trig key blinks red (note trig) or yellow (lock trig). To remove one lock, hold the trig and press the knob. A parameter counts as one locked slot regardless of how many steps use it; up to 80 different parameters can be locked per pattern. The common confusion is thinking locks are expensive per-step — they are per-parameter, so locking filter cutoff on every step still only uses one of 80 slots.

Examples

Hold [TRIG 5] while turning the filter frequency knob: that step now has a one-time cutoff spike. In Live Recording, open the filter gradually — every step you pass through gets a different cutoff lock written automatically.

Assessment

Given a four-step pattern, describe how to make steps 1 and 3 play at +12 semitones while steps 2 and 4 stay at the track default. Then: how many of the 80 parameter slots does that consume?