I listened to the stream of The Quartet, and, to my surprise, enjoyed it greatly. First of all, Brötzmann plays a lot of alto, which I really like (I remember at one of his concert I attended he played blistering mean alto behind the closed curtains during warm up only to play no alto at all during the concert itself). Second, possibly thanks to physical limitations, he is more concise that usual and less prone to falling back on repetitive licks. Adasiewicz's vibes add a melancholic tinge, and Noble is just fantastic. Good stuff, I might get the CD in honor of the great Mensch.