The "Earth Sound" CD emerged during development of the Deep Earth Dome sound installation project. It includes three 20-minute recordings of the Earth's slow natural vibrations, captured by a global network of digital seismographs and transposed into high-quality stereo. It is accompanied by a 16-page full-color illustrated explanatory booklet.

An excerpt from the CD was featured on NPR’s “Sound Clips” series in 2006.

The CD was first published in 2007, revised and reissued in 2010, but is now out of print and no longer available. Digital downloads abound on the Internet at places like Spotify, Apple Music, and Amazon. But you can just as easily listen to the tracks or download them, for free, right here:

Track #	30 second clip	Full 20 minute track
1	August 2006 (33 days) [clip] August 2006 (33 days) [clip] [0:31 · download]	August 2006 (33 days) August 2006 (33 days) [19:39 · download]
2	May-Aug 2006 (140 days) [clip] May-Aug 2006 (140 days) [clip] [0:30 · download]	May-August 2006 (140 days) May-August 2006 (140 days) [20:10 · download]
3	Dec 26, 2004 (3 days) [clip] Dec 26, 2004 (3 days) [clip] [0:30 · download]	December 26, 2004 (3 days) December 26, 2004 (3 days) [20:00 · download]