Violins are featured in this song, but the musicians who played theme were not credited.
[2] Barry Gibb only sings and play guitar on the song's demo.
It was one of the tracks featuring Terry Cox on drums following the departure of Bee Gees' original drummer Colin Petersen.
Alan Caddy Orchestra and Singers covered "Sweetheart" in 1970 and released on 6 Top Hits and Tribute to Engelbert Humperdinck.
[6] American singer and actor Dean Martin recorded his version also in 1970 and included on For the Good Times.