Here are the original tracks used for The Hook Strikes Back (EP 18). I mixed pells into some of the transitions between cuts. They are as Follows:

Lessig and Colbert
Lessig Rootstrikers
Snowflakes At The Root
Fireproof Babies A Blasted Life

Larry Lessig and his team curated a Strike The Root album from the pool of ccMixter tracks. It is available as a TuneTrack.net Proceeds support the artists and the Rootstrikers organization.