[1][2] Formed in 1960, the Barron Knights took inspiration from American group the Four Preps, known for their comedic and parody songs.

[3] "Call Up the Groups" was written by band member Peter Langford in February 1964 and is based on the Four Preps 1962 song "The Big Draft".

[4][5] "The Big Draft" is a medley of popular songs such as "I'll Never Smile Again", "Love Is a Many-Splendored Thing" and "Runaround Sue", with the lyrics rewritten to jokingly urge the government to conscript rival vocal groups such as the Platters so that the Four Preps would be the only group around.

Part one is a medley of "Needles and Pins" by the Searchers, "You Were Made for Me" by Freddie and the Dreamers and "I Wanna Be Your Man" by the Rolling Stones.

Part two is a medley of "Diane" by the Bachelors, "Bits and Pieces" by the Dave Clark Five and "Twist and Shout" by the Beatles.