Noun
The reverse side of a cassette tape or a phonograph record, especially a vinyl single, often containing songs not considered for airplay.
Synonyms: flip, flipside
Antonym: A-side
Any song included on a compact disc single, besides the first song (the A-side).
Source: en.wiktionary.orgThe new album, Hounds of Love, breaks new ground for Kate with the b-side. This is a story - The Ninth Wave - told in a series of songs, like a Pink Floyd concept album. Kate Bush
40th anniversary To mark the 40th anniversary of "Bohemian Rhapsody", the song was released on a limited edition 12" vinyl with the original B-side "I'm In Love With My Car" on 27 November 2015 for Record Store Day 2015. Source: Internet
Also during this time, the band's song "Tomorrow" (originally an instrumental on the B-side of "Get The Funk Out Ma Face") was recorded with vocals by Tevin Campbell for Quincy Jones' Back on the Block release in 1989. Source: Internet
Also in 2008 the band remixed the Attery Squash song "Devo Was Right About Everything" which was released on the B-side to the " Watch Us Work It " vinyl 12" single. Source: Internet
"As I Love You" was released as the B-side of another ballad, "Hands Across the Sea"; it did not sell well at first, but after an appearance at the London Palladium sales began to pick up. Source: Internet
A notable inclusion in the box set was " Silver Springs ", a Stevie Nicks composition that was recorded during the Rumours sessions but was omitted from the album and used as the B-side of "Go Your Own Way" instead. Source: Internet