Take 6 is well known for their a capella, gospel harmony. You may also want to listen to some of Bobby Mcferrin's work, specifically Spontaneous Inventions, Medicine Man, and Paper Music.
I would also recommend the recent release from Ben Harper with the Blind Boys of Alabama. It's not a capella, but, man, if you want to hear some soul stirring rhythm and harmonies, check it out.
I would also recommend the recent release from Ben Harper with the Blind Boys of Alabama. It's not a capella, but, man, if you want to hear some soul stirring rhythm and harmonies, check it out.