Interesting that you have posted this today. I was just going to post a similar question about preferences for background music, but there seem to be at least three categories.
1) background sound effects for your haunt
2) background party music (that you can talk over)
3) dance music - not in the background (talking optional)
I think Nox Arcana and Midnight Syndicate offer great choices for background music that can be edited for either use. But I'm sure there are other groups out there that I haven't heard of. Are you looking for "dance music" recommendations, or just "set up" ideas?
I would love to hear members thoughts about music choices by category....