In case you've never listened to a lot of excellent bands in the most ridiculously sloppy and swamp-like conditions imaginable, the experience at this year's Austin City Limits Festival provides a good hint as to what you've missed.

It's easy to be skeptical when the term "supergroup" starts getting thrown around -- it usually connotes a battle of egos, an unwieldy split of duties, and, ultimately, music that doesn't match up to the work of the independent parts.