What about jazz and chamber music?
Go to amazon.com - go to movies - Blue Ray- then music and concert genre - and their list is pretty much all that's out there. The choices are still a bit slim right now, but growing. Sheryl Crowe and John Mayer are both excellent. I'm anxiously awaiting the release of Neil Young's "Archives" in Blue Ray, but hoping the price will be a bit more realistic that the presale price.