Sequencer

A dedicated device that records a series of synthesizer note parameters (via MIDI) into a storage device for subsequent editing and playback. Or, a software program that records note data onto a computer's disk drive. Most sequencers can also record system exclusive messages, MIDI mixer or recorder data, and store bulk dumps of parameter data from signal processors. During playback, the sequencer triggers the synthesizer sound generators and sample playback devices as well as reproducing mixer movements and controlling signal processing programs and parameters.