I really like The Beastie Boys. They have done some really interesting music, but more importantly, they have put together some great albums. One I particularly like is Ill Communication. Its mix of rap, rock, and really cool groovy music makes it a really great musical journey.
Here are three of the more mellow songs from the album. This is not the same Beastie Boys you remember from You've Got to Fight For Your Right (To Party).
Sabrosa (sounds like an early-seventies movie soundtrack)
Ricky's Theme (nice little mellow groove about hanging out with friends in the summertime)
My favorite groove from the album: Shambala