"My Friend Dario" is the first single from Vitalic's debut album, OK Cowboy. It is the first single from Vitalic to use "Brigitte", a vocal synthesis program. "No Fun", which is another track on OK Cowboy, also uses Brigitte. The maxi-CD version of the single includes a live cover of Daniel Miller's "Warm Leatherette", performed on BBC Radio 1. The cover was later included in a collector's edition of OK Cowboy.