Sequencer

[Mark Zuckerberg]

An electronic music device that allows individual notes to be programmed and played back.

[Jessica]

A software or hardware musical tool that allows you to lay down a sequence of notes over a series of measure(s).

Its commonly abused in conjunction with an arpeggiator by the musically uneducated.

[Michiko]

Someone who uses a music program (Noteworthy Composer, Anvil Studio, etc) to recreate music by ear in MIDI format. Usually taken from video games, movies, or general theme songs.

[Dave Paprocki]

I random music term thingy