Earlier this year, I saw Phillip Greenlief conducting Anthony Braxton’s Composition No. 255, at the In the Flow Festival in Sacramento.
A music fan named Charles has done dedicated work filming music concerts in that area. He got No. 255 on tape, and also recorded part of a rehearsal, for a feel of what it’s like preparing this kind of work.
I’ll embed both videos here. You don’t get to see these kinds of works live very often, so it’s nice to have a visual document to refer back to.