Forostar
Ancient Mariner
Nah... A live gig is a live gig and I do not mind a few off key vocals.in fact, the musical value might have been actually added. There are times I wish Maiden did play back their backing vocals (who is it who sings the backing vocals completely off-key live, CIPWM being one of the worst offenders?)
(And a precize backing track for vocals would be impossible, since the band doesn't play exactly the same (tempo) as in the studio)