Michael,
Thanks for posting this.
Folks, these raw (mostly) session recordings are from various labels, a couple of which are still coming onboard; stay tuned for their full albums. Unlike a compilation album meant to be listened to in one session, these recordings have levels all over the board (we didn't touch them, other than to professionally resample examples for other DAC users like DSD64 or DXD...and we disclose that in the site), so consider them individual recordings. The Mahler 1 session stuff is the only DSD64 source; the remainder are either recorded in DSD128 or DSD256. Enjoy.
Ted_B