International avant-garde ensemble Zeitkratzer continue their Old School series with a release dedicated to the work of American composer James Tenney. This CD presents a new recording of Critical Band -- Tenney's late classic -- with maximum clarity. Also included is the first recording of Harmonium #2. Both works demonstrate the remarkable power and resplendent sharpness which Tenney achieved by composing with pure tunings. Koan: Having Never Written A Note For Percussion, for tam-tam, completes this CD with an orgiastic listening experience in the form of a huge crescendo on this wonderfully simple instrument -- from whispering to singing, culminating in shrill roaring and blustering -- and its dark decay. Tenney's music as a sensual sound adventure! Directed by Reinhold Friedl. Musicians include: Frank Gratkowski (clarinet), Hayden Chisholm (alto saxophone), Matt Davis (trumpet), Hilary Jeffery (trombone), Reinhold Friedl (piano), Maurice de Martin (percussion), Burkhard Schlothauer (violin), Anton Lukoszevieze (cello), Uli Phillipp (double bass) and Ralf Meinz (sound). Recorded live at Philharmonie Luxembourg on October 3, 2009.