from a sincere admirer of Patorzhinsky's art.

Doesn't he have a great voice in these? His voice seems to have mostly gone by 1934. My 1926 record shows a good voice but the recording has problems.

I fully agree about these. They're excellent.
Frankly speaking, I had never heard one of his early ('Muzpred', 'Mustrust') recordings before you laid these out (thank you once more).
But I'm not sure about voice spoiling. There are some great later recordings, e.g. 1935 or 1939...

I will listen again. But I don't think I have ever heard such a vocal sound in any later records.

I didn't quite believe that he made these Muzpreds for a long time. They are (four sides) in a catalogue as acoustic but without the 0x prefix, and he was a little too too young to have recorded before the revolution.