U2's Bono and The Edge have helped to create the most expensive musical ever staged on Broadway and they are worried about the end result.
In an interview with '60 Minutes' Lesley Stahl, Bono talked about the 'Spider-Man' musical which is due to open this weekend: "It has been one of the funest (sic), more joyful rides of our artistic life, for sure.
"We've moved out of the rock 'n' roll idiom in places, into some very new territory for us. There's big show tunes and dance songs."
Bono and The Edge have created a number of original songs for the musical extravaganza.
According to The Star, U2's front man added: "If the rabbit comes out of the hat, we will be rewarded. If the rabbit comes out of the leg of the trousers, we could be figures of fun for a few days. Or worse, looking for a new job."
The Edge said working with the show's creator, two-time Tony Award winner Julie Taymor was "like being a student in a master class of musical theatre and opera."
Bono added: "Julie Taymor is definitely a magician. I think that's what you call a person, who, even though they put the rabbit in the hat, is really surprised when it comes out."
A year and a half plus €45m ($60m) later and the show's first preview is scheduled for this Sunday 28 November, following numerous delays due to money, the complicated staging and flying effects that injured two actors.
Following previous reports that the musical would never make it to the stage, Taymor told Stahl that danger and risk make for a creative success.
Taymor said: "I love it when people say 'What a horrible, lousy idea.' I think that's great. I hate the comfort zone; I don't think that anything that's really creative can be done without danger and risk."
Taymor's spectacular staging of 'Lion King' is still playing in theatres after 13 years.