iTunes, how i love thee.
Did a search for “clouds” and instantaneously got back:
Cloudscape - Philip Glass - Koyaanisqatsi
Imperial Starfleet Deployed/City in the Clouds - John Williams /London Symphony Orchestra - Star Wars: The Empire Strikes Back
Little Fluffy Clouds - The Orb
Take Me To The Clouds Above - Lmc Vs U2
I have to say, it was certainly one of those most interesting 23 minutes of music I've ever listened to.
(Oh, and the visualizer roxdabox)