Who's She Lovin' Tonight? (uncredited) Music and Lyrics by Jace Smith Performed by Jace Smith Band Lead Vocals & Rhythm Guitar by Jace Smith Danny Costello (IV) (Lead Guitar & Backup Vocals) Steve Smith (CXIV) (Bass Guitar & Backup Vocals) Guy Babylon (Keyboards & Backup Vocals) Tom Costello (XV) (Drums & Percussions)