May I direct your attention over to this fantastic review at Sequenza 21 of the best concerts I saw last year: Charlemagne Palestine's massive organ piece Schlingen-Blangen, at the Second International Conference on Minimalist Music at UMKC.
An addendum to Pwyll's excellent description: Following the concluding Firebird melody, Palestine came down from the organ loft to greet his audience. He immediately made eye contact with me and, without breaking eye contact, walked slowly towards me repeating "Do you know who I am? Do you know what that was? I am the Firebird. I am the Firebird." It was, needless to say, a surreal experience. Just about anyone who had a conversation with Palestine over the course of the weekend was completely befuddled. He slept through most Kyle Gann's and Cahill's performance of Dennis Johnson's five-hour November for solo piano, which would have been fine except for the impressively loud snoring.