Say It Isn't So was released by RCA Records in October 1983 as the first of two new singles from their compilation album Rock 'n Soul Part 1, released that same year.

"Say It Isn't So" was written by Daryl Hall during the duo's supporting tour for H2O. It was the first of two songs recorded during the sessions for Rock 'n Soul Part 1. The sessions took place in September 1983 at Electric Lady studio a in New York City. The song were produced by Daryl Hall and John Oates, with recording by Bob Clearmountain, who co-produced the recordings. The backing musicians on the song were bassist Tom "T-Bone" Wolk, saxophonist Charles DeChant, guitarist G. E. Smith, drummer Mickey Curry, and percussionist Jimmy Brawlower.  [SOURCE]

#2 on the pop charts, but it also hit the soul, dance and soft rock charts! How about today?