"Donna", a parody of doo wop songs (see also "Donna" by Ritchie Valens), was originally written as a potential B-side to the song "Waterfall". The song features sharp contrasts between falsetto in the chorus (Creme) and deep monotone vocals (Godley) in the verse. The style in which "Oh! Donna..." is performed mimics that of the track "Oh! Darling" by the Beatles, from their album Abbey Road.
Band member Eric Stewart has said: "We knew it had something. We only knew of one person who was mad enough to release it, and that was Jonathan King." The song was subsequently released on King's UK Records label. The band had considered releasing it under the name of "Doctor Father Part Two", resurrecting a band name they had used for their 1970 song "Umbopo". Band manager Harvey Lisburg said there was "a vague sort of plan at that time to keep on bringing out records under different names until they got a hit".