B-side noun2 •The reverse side of a cassette tape or a phonograph record, especially a vinyl single, often containing songs not considered for airplay.I wonder what is happening on the flip side of the world, / The side you never like to play / I know you say you need the A-side all the time / But the B-side, I just wonder what you say — 1972 •Any song included on a compact disc single, besides the first song (the A-side). formsB-sides
