I wouldn't take my kids to any concerts where excessive profanity could be heard (depending on their ages), but I'm not sure I would be too concerned about "devil worship". I don't really think there are any bands out there promoting devil worship. Those who might are either doing so as parody, or are so bad that nobody would want to see them anyway.
I think to dress or sing about satanic ideology although they may not practice as such is still a promotion. Example Marilyn Manson
I have found otherwise. Fortunately, my daughter seems disinterested in it. What bothers me is that some kids are glued to MTV without roles models instilling positive values