Yes, of course Das Lied with Ferrier and Walter on decca is indispensable. How could I overlook it? But it's in mono, so sonics are somewhat limited. As for that live Bernstein one-off with the BPO on DGG: I didn't mention it because I have this on CD and didn't know it was also issued on vinyl. It's a 'must have' performance for sure, whatever the format. Bernstein's later DGG live cycle (with NYPO, VPO and CGOA) has some great performances as well, notably no. 6 and 7. These were originally issued on vinyl as well as CD. They're digital recordings, which is why I have them on CD.