Thunk Up is a compilation on CD, released on Equinox Productions (EQCD18) in 2002.
The CD collects 11 tracks from 5 artists, having Infusion and Pocket featuring three tracks each and Earthlink and Head Affect featuring two tracks each. 9 tracks are exclusive to this release: "Smoke Signals" by Pocket, "Rader" by Earthlink, "Fakin" by Head Affect, "George Goes to Kansas" by Dillon Street Rangers, "O-Blow" by Earthlink and 4 more. This is the first release for 2 tracks later found elsewhere: "" by Infusion and "" by Infusion.
- 01Infusion — Spike (Morse Mix)
- 02Pocket — Smoke Signals
- 03Earthlink — Rader
- 04Head Affect — Fakin
- 05Dillon Street Rangers — George Goes to Kansas
- 06Earthlink — O-Blow
- 07Pocket — Fugue
- 08Head Affect — Escalator
- 09Infusion — Procrastinator
- 10Pocket — Wormhole
- 11Infusion — ISBN
