Reference Recordings "Tutti" orchestral sampler, I'm at a loss for HDCD jazz. Sonny Boy Williamson isn't really jazz, it's blues, but the reissue from Analogue Productions is a very good HDCD. My favorite jazz on CD, are on JVC XRCD. They are still awesome. If you really love classical and jazz, you need to get into vinyl. If you think HDCD sounds better than CD's not encoded with it, you ought to hear a vinyl rig in the same price range as your digital. It is a Pandora's box, I admit, but then so is this whole hobby anyway. Good luck.