The song was written by Benny Andersson, Björn Ulvaeus and Stig Anderson and at one point had the working title "Stop and Listen to Your Heart".

Since ABBA themselves did not want to compete in the contest again, just one year after having won, they instead gave the opportunity and the song to Polar Music labelmates Svenne & Lotta.

"Bang-A-Boomerang" was given new Swedish lyrics by Stig Anderson and retitled "Bang en Boomerang" and the duo subsequently made a vocal recording of the track in November 1974—produced by Björn & Benny—with a different arrangement, most noticeably slightly shorter (2:50) than the original demo, to fit the Eurovision three-minute rule.

The song finished third in the Swedish preselections in February 1975, became one of Svenne & Lotta's biggest hits and spent seven weeks on the Svensktoppen radio chart during the period 9 March – 11 May 1975, with a second place as best result.

Although the track was included on the band's first Greatest Hits album, released on 17 November 1975, the ABBA version was in fact never issued as a single in Scandinavia.