http://www.youtube.com/watch?v=T67nSvVYf0o - Gyorgy Ligeti - "Allegro con spirito" aus der "Musica ricercata"

For a Bach recording (Orgel-Choralvorspiel "Ich ruf zu Dir, Herr Jesu Christ") click on the Bach face on the Thyll concert website of the Swiss Foundation Dr.Robert und Lina Thyll-Dürr.