Wikihopping #2 (Belly Dance to Ronald Reagan) by HerzogA

Question 9

[A-side and B-side] Traditionally, the A-side of an album is the advertised single, while the B-side is an extra single to add more value to the record. Sometimes, a DJ will prefer the B-side and make it more popular than the A-side by giving the B-side more airtime. Such was the case for a particular disco singer, whose 1978 B-Side was far more popular than her A-Side cover of The Righteous Brothers' song "Substitute". Later in the year, both the A-Side and B-Side singles were released in the singer's album "Love Tracks". Name either the SINGER or the original B-SIDE SONG.

Gloria Gaynor, "I Will Survive"