Catalog Number: AD1-9837 Condition Details: Vinyl plays nicely (play-graded). 12" Single. Generic replacement cover. Inner-sleeve is original (blue). Original picture sleeve NOT included. (Not a cut-out.) Tracks: What You Don't Know (Atomic Mix) What You Don't Know (Might Hurt You Beats) What You Don't Know (Radio Mix) What You Don't Know (Bass Mix) What You Don't Know (Crossover Mix) About The Record: What You Don't Know, by the girl group Expose, was written and produced by the group's founder, Lewis Martinee, and appears on Expose's second album, What You Don't Know. The song is replete with snazzy horns, a colorful guitar solo, and a fiery lead vocal by Gioia Bruno. Released as the first single from the album, the song peaked at No. 8 on the Billboard Hot 100. On the Billboard dance charts, the song reached no. 2 on the Hot Dance Club Play and no. 8 on the Hot Dance Singles Sales charts. It was the first single by the group to be certified Gold by the U.S. RIAA. The music video features the group rehearsing with a band on stage, then near the end of the video the women rush back to be with their boyfriends.