Only heard them recently due to the Trail of Dead connection (Jason Reece is a part of the collective) but am really enjoying what I've heard (the single Heaven and the Daytrotter session
http://www.daytrotter.com/dt/midnight-masses-concert/20030819-3738134.html
It's really quite dark alt-country with choral style vocals, I like the different voices for different songs and blues-eyness of some bits (some wonderful robert johnson style lyrics), anyone else digging them?