Who's performing on your DVD?

My sole recording (CD) is by Klemperer. With Schwarzkopf as one of the soloists.
I guess I need to look into what audio recordings are available on BD - haven't seen much except movies so far. I do plan to get the Oppo BD when it comes out, but really hadn't though about using it with the audio system. What's a great BD 5.1 (classical) audio recording to try it on?
There aren't THAT many yet, and I have reason to believe some caution must be exerted with some particular titles. My BD's are only with video AND audio, and they are the NY Phil performing in Pyongyang, as well as the Brandenburgs directed by Abbado. The video is not reference on either (and I think even 1080i on at least one of them), but the audio is excellent. The video is still cool, mind you, and the Italian hall where the Bach works are performed is gorgeous. One or two of the soloists aren't too shabby looking either.
Here's a small thread for you to reference:
Opera, Ballet and Classical Music discs (Bluray)
Thanks for the heads-up about compressed PCM on DVD vs uncompressed on BD. I must've missed that among all the specs.
Actually PCM is uncompressed either way. The difference is that you can only get 2.0 uncompressed PCM on DVD, where you can get many more channels of the same on BD (normally 5.1 on classical recordings I've seen, but the capability for at least 7.1 is there, if not even more?). The 5.1
lossy tracks on classical DVDs always lose too much transparency IMO.
FYI: compressed is NOT mutually exclusive to being "lossless". Compression algorithms for HT soundtracks, like DTS-MA or TrueHD are indeed compressed, yet still "lossless". I've even read that Dolby Digital Plus is something like 99% the quality of lossless. However, you don't even get that on a DVD, and ol' vanilla DD tracks just can't cut it IMO. Heck, they don't even cut it for me on an HT soundtrack, but for a resolving classical recording, you can just forget about it.
There's a lot of text and talk about where high-end video is going, but I don't seem to find much about audiophile audio formats. I guess the old 2.0 stereo really works well with the right gear.
I've seen TLS say something to the effect that by far most recordings that exist today in the world are best suited to a 2ch system.