BBC's Illustrated Introduction to the Tenth Symphony
with Deryck Cooke playing and speaking
Gustav Mahler
Symphony No. 10
fragments and completions
Deryck Cooke, piano and lecture
Berthold Goldschmidt, conductor
Philharmonia Orchestra
December 19, 1960 broadcast

This is simply invaluable, essential Mahler stuff. If you're a fan, or just interested, then hear this through at least once before your own final hammer strokes resound...
"...Deryck Cooke began work on his score in 1959 in connection
with the impending Mahler centenary, and on 19 December 1960,
Berthold Goldschmidt, who had assisted Cooke, conducted a partial
performance with the Philharmonia Orchestra in London. This was a
lecture-demonstration for radio, but the objections of Mahler's widow,
Alma Mahler Werfel, to any sort of "completion" had to be overcome
before there could be a full performance..."
Excerpt from Michael Steinberg's "Symphony no.10 by Gustav Mahler",
found at
www.mahlerarchives.net/archives/steinberg.pdf
Thanks to Psanquin for this rarity.