Thanks lowrider! Seems you've resurrected this thread so thank you. As far as Testament, I do have a few. My last purchase was a Richter recording of Schubert on the APR label.
What I've been looking for recently are live radio broadcasts. The Salzburg Festival is plentiful in this regard. Less common but near to my heart are WDR Köln related recordings however SWR are easier to come across.
As far as a guide, I typically will look at label websites directly and cross reference them with arkivmusic.com. The Audite and the Hänssler Classic labels seem to offer several historical recordings but I've yet to purchase any.
What I've been looking for recently are live radio broadcasts. The Salzburg Festival is plentiful in this regard. Less common but near to my heart are WDR Köln related recordings however SWR are easier to come across.
As far as a guide, I typically will look at label websites directly and cross reference them with arkivmusic.com. The Audite and the Hänssler Classic labels seem to offer several historical recordings but I've yet to purchase any.