Kurt Equiluz for Harnoncourt/Willcocks SMP 1970
Christoph Pregardien SJP with Max, SMP with Harnoncourt
Peter Schreier SJP 1988 with himself as conductor; SMP with Mauersberger, but he sang the roles countless times with many conductors
For some reason (probably the "-uz" which occurs in some Swiss regions in place names) I always think Equiluz is Swiss, but he is Austrian and still alive (*1929)
He stepped in for a singer who had become ill only a few years ago at 87?!? which seems quite incredible..
It's a great interview; Equiluz seems a very modest and unassuming person. It's interesting that he spent a long time in choir and small/buffo opera rôles before becoming something of a Bach specialist in his late 30s (he denies this specialization).
The discography is not quite representative because his opera rôles were fairly small (down to something like the tenor Armed Man in the Magic Flute), rarely recorded and mostly early although he sang there until the 1980s. He mentions that he is a very good sightreader (apparently not so common with singers maybe because in opera they have to learn the stuff by heart anyway which must have made him the perfect short notice replacement).
I also remember that I saw Equiluz once on TV with a song from Winterreise accompanied on a very historic sounding Hammerflügel, probably done in the 1980s? Demus or Dähler could have been the pianist? and he mentions that he has been transcribing lieder from the manuscripts of an older Schubert contemporary in his retirement, so he clearly has an interest in and performed quite a bit of lieder but I don't know what has been recorded.
Benedict Randhartinger (now, that's an Austrian name!) is the guy whose lieder Equiluz transcribed himself. In the interview he erroneously says that Randhartinger was older than Schubert; he is in fact a few years younger and lived much longer, which is probably what he meant, or I misunderstood.