Music. KOOL A.D. — O.K. (AUDIO). Posted by egotrip on 11/26/2015. Comments Off on KOOL A.D. — O.K. (AUDIO). Tweet A collection of 100 songs is soundtrack to the book Kool A.D. is trying to release next year. O.K. by KOOL A.D. [Check out interview over at FADER ] Tweet Kool A.D.