This 7" single pairs "SOS" with the B-side "Man In The Middle", both taken from the 1975 studio album ABBA. "SOS" became one of the group's first major international hits, with its recognisable piano motif and Agnetha Fältskog's lead vocal. The single appeared as part of the series of anniversary releases marking the album's fiftieth birthday.

This edition is a 7" single as a picture disc.