The Petal Dance album was released on iTunes and in a piano score bundle on the Piano Inc. shop.

The full album with the unused tracks is only available on the Piano Inc. shop, included with the soundtrack piano score for ¥3,000.

Otherwise, a lighter album is available on iTunes for ¥1,200.

Tracklist:

01. Lys (0:40)
02. Petal* (?:??)
03. Trace (0:26)
04. Wilma (1:36)
05. Sayonaraba (1:30)
06. Then (0:35)
07. Re-trace* (?:??)
08. lulu (2:56)
(vocals: Predawn)
09. Dimini* (?:??)
10. Norway* (?:??)
11. Eine (3:33)
12. Northern Light (2:36)
13. crouka (3:54)
(vocals: Egil Olsen)

*unused tracks only present in the piano score album

The iTunes album is less than 20 minutes long, and every music contains only a piano and sounds generated with a piano like inverse sounds.

Here is a digest from Piano Inc. soundcloud page (it doesn’t contain any unused track):