"Age Ain't Nothing but a Number" is a song by American singer Aaliyah from her debut studio album of the same name (1994). The song was written and produced by R. Kelly and lyrically the song is about a young girl wanting to date an older man. Containing a lyrical interpolation from the song "What You Won't Do For Love by Bobby Caldwell the "soulful" ballad opens with a guitar-piano interplay, with Aaliyah's spoken voice noting her daily diary entry. Critically the song was panned by many critics because of the song's controversial message about dating someone older.