Night Music: Tape Chants

YouTube clip, but audio-only. Stick with it. From the uploader:

Gregg Kowalsky playing his Tape Chants piece live at the Fairchild Chapel in Oberlin, OH. 6-10 cassette players were positioned around the chapel with source material of different sorts, Gregg walked around and made a live mix, slowly adjusting volume and speed/pitch. On tour with Ben Bracken. Dark night at the Fairchild.

The album is on eMusic.