While at their concert, I got onto ITunes and downloaded the earlier album by "Straight No Chaser." I stood in line to get their newest album (since it was being released a night early at the concert, being as they were "home" at IU for the concert), but I decided I wanted to listen to all their music on the drive home.
They're an A Capella group, and are amazing. When I worked for the IU Alumni Association, the original guys used to come sing for us all the time. They just get better over time.