A software or hardware musical tool that allows you to lay down a sequence of notes over a series of measure(s).
It's commonly abused in conjunction with an arpeggiator by the musically uneducated.
Unclean fool: d00d u hav 2 see wut i jus made in FL studio!
Me: It's not just the same three chords arpeggiated over and over in the sequencer in 4/4 time is it? Please don't tell me the rhythm is just a bass drum playing pure quarter notes!
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.
"Dude, I just found a MIDI of the Ghostbusters theme."
"Heh, I know the sequencer who made that."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.