The songs from the show I was directing used to haunt me. As the show got closer and i started to panic more, I would literally wake up in the middle of the night and with songs from Godspell and Seven Brides for Seven Brothers in my head playing so loud that I couldn't fall back asleep. So I would lay there panicking that the show would suck.
But it didn't. It was absolutely perfect, and people are still calling me to tell me how great it was