Bang-A-Boomerang is a song written by Björn Ulvaeus, Benny Andersson and Stig Anderson for ABBA's 1975 album ABBA.

Late in 1974 Björn, Benny and Stig were invited by Sveriges Television to compose a song for the 1975 melodifestivalen. Having won the previous year and not wanting to compete again they gave the song and opportunity to compete to Swedish duo Svenne & Lotta, who were also signed to the Polar Music label.

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