I have to laugh at your Queen reference. Queen's harmonizing is outstanding (in my book), but I get what you mean about the lyrics.
We have Sirius on cable and one of my favorite channels is Hair Bands of the 1980's. I noticed that our parental blocking code pops up whenever I want to listen to it, yet doesn't pop up for the other 80's rock channel. Apparently, Sirius has already done some of the filtering for parents. I don't know if Queen would be categorized as a "hair band", though...unlike Twisted Sister, for instance.
There are good bands with clean lyrics:
Owl City I like to check out online the lyrics of a few songs before I buy CD's for my son.
