I recently borrowed a DVD entitled "Keith Jarrett: Art of Improvisation." It was from 2005, and an overview of the pianist's own musical history. It included a lot of musical performances, but was arranged like a loose documentary, interviewing Jarrett himself, his trio consort, and even relatives. The documentary was a good background into Keith, including his own personal history, and an overview of his own musical accomplishments. He made quite a distinction between playing jazz, or in his solo concerts, where the music "comes through him," versus playing classical music, a far less strenuous process. While the question isn't asked directly, they do allude to his "singing" and noisemaking in jazz vs. his classical performances. He explained this the same way, as the music "going through you," and the noises simply a side effect of the process. Listening to his recording now of his Handel Suites on piano, they sound flat yet clean and steady (rhythmically). I found his WTC 1 by Bach to be similar, although the piano in this recording is a couple notches better. Someone with such genius ought to be able to say more through the baroque masters than he does. But then again, maybe that's his point. So, while his baroque forays aren't my favorite recordings, and his own orchestral content I like even less, I'm nevertheless now better educated about the man behind his incredible solo concerts and the better-than-none standards trio.