One of my favourite recordings is a pretty poor one,of Jochum junior in Bruckner 2,from 1944. So yes I can make my way thru the veil. They can't stop me from getting past a murky recording to get to the performance. (Usually I claim to have a hard time distinguishing performers and performances;there are few I separate from the pack,so when I do, I'm the first to be taken aback.)
For me,the Fried was/is an incredibly moving experience,the first hearing of which was without doubt the most moving listening to a recorded performance I've ever had.
I felt I was hearing a performance from a world quite different from ours;that I was in a quite different atmosphere. That old E.M.Forster line gets it."The past is a different country. They do things differently there."
Where I hear Furtwangler as a stand-out different performer because his performances are like a musical talking , as distinct from the playing of music. Fried is like that (I've heard his Beethoven 9,which is also something else). Except that I hear it as tho' from another world (tho 'not another planet). I'd love to know what the pair of them do (in their different ways) to get those results. It says so much for how different we are from one another (apart from our vast range of similarities) that there are people who can imagine such performances. Which they then have to work out how to get from the orchestra.
Come to think of it,I wouldn't call Fried either rugged or polished . More emotional and moody and delicate - just what I imagine Mahler was inside.
Yes,I've read that account of Fried,M. and that performance of the 2nd. What of M.'s performance of the 2nd is, in fact, in the Fried I have no idea whatsoever. Even the fact that it was the performance nearest in time to Mahler doesn't prove its Mahlerian authenticity.
I.