This is brief, but I found it great fun for fans like us.
Stephen Colbert was doing a questionnaire (or, as he calls it, a Questionert) with Bradley Cooper and one of the questions he asked him was, "What is one song you can listen to for the rest of your life," to which Cooper immediately answered "Mahler's
Resurrection." Colbert then asked his lead musician Jon Batiste to play some Mahler and Batiste replied, "We don't have enough instruments!" Cooper went on to explain that his work on the Leonard Bernstein biopic
Maestro he's currently making caused him realize that.
I was paraphrasing, of course, but you can watch the whole thing here:
https://www.youtube.com/watch?v=FXrTPWLWqSUI believe the question is asked at 3:40, and it's only about 20 seconds.
As part of his interview, Cooper talked about
Maestro with Colbert and how he came to direct and star as Bernstein:
https://www.youtube.com/watch?v=aBO1C9PinhYLooking forward to seeing that biopic someday! I'm sure there will be plenty of Mahler.