Replying to Annoying situation. What should I do?

So anyways some of my friends are big into like live music but whenever i go with them i cant really get into it cause its usually like cover bands for really slow paced rock type stuff. I like music like fischerspooner and goldfrapp and good electronic stuff like that. So tonight their finally going to a concert with an electonica style band and they want me to come. The thing is the band thats playing is called passion pit and they are just godawful. Their like a shitty knockoff of the postal service. So I really dont want to go because if i do and i have a shitty time everybody is gonna be like "whats the matter I thought you love this type of music" But I also dont want to hurt their feelings by saying they bought tickets to see one of the lamest bands ive ever heard.

heres an example of their music http://www.youtube.com/watch?v=Pp0mNFr1iNw

so anyways what should I do


ps sorry if anybody likes passion pit, but they seem pretty bad to me.