GORGONZOLA, A
cheese (anagrind)
eschewed by (del)
defender of Dreyfus & Go = ZOLA + GO
L'Aurore - French political newspaper (def)
(where he published his defence)
Thank you, Les and AB! Loved the puzzle. Les's 38a is perhaps my favorite all-round. Peterm's phrase "Bizet's refusal to entertain Chopin" at 26a is brilliant (the little brat- he was only a child when Fred died). AB impressive as usual with 37d. Lots of other inspired clues. And I was fooled by emrach!