Track a DJ may have played that hasn't been released and therefore hasn't been ID'd.

New track a producer/DJ plays that nobody knows the name of yet.

Commonly used in text messages or social media as a short form for Very Sound Advice.

1) In Freudian theory, the division of the psyche that is totally unconscious and serves as the source of instinctual impulses and demands for immediate satisfaction of primitive needs.
2) Short for identification
3) The creators of Doom

ID is an abbreviation for In Development. Music Producers would usually name a song preview ID because it is a song being worked on.

along with the ego and the super-ego one of the three components of the pyche... apparently

worth 4 points in scrabble!

Contraction for "I would", "I had", or "I should."

1. an identity card

2. any means of identification