Shields of Faith

Funky gospel sounds.  Spotify has a seven track album from 2007 available, which I assume is the right group, although YouTube has quite a bit of music with Shields of Faith in the title (including one very flute-heavy instrumental rendition of Amazing Grace), so hard to know which is which.  I'm going to assume this is the same thing as the group that will be at ACL:

If it is not the right band, just put your hands together and jam out for six minutes and thirty-nine seconds anyway.  Entertaining stuff.