"Song 4 Lovers" is a song by British pop band Liberty X, released as the lead single from their third studio album, X. The single was released on 26 September 2005. The song features vocals from American rapper and member of Run-D.M.C., Rev Run. It was the band's first and only gospel-orientated song, and was produced by band member Tony Lundon. The single peaked at No. 5 on the UK Singles Chart, becoming the band's highest charting single from the album.