Sequencer

A hardware or software device that plays back a MIDI sequence is known as a sequencer. A MIDI sequence contains lists of time-stamped MIDI data, such as might be read from a standard MIDI file. Most sequencers also provide functions for creating and editing sequences.

The Sequencer interface includes methods for the following basic MIDI sequencer operations:

• obtaining a sequence from MIDI file data
• starting and stopping playback
• moving to an arbitrary position in the sequence
• changing the tempo (speed) of playback
• synchroni
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