Grade: A+

This is the Stradivarius benchmark for Apps. It is simply Über.
My only suggestion to the Devlpr is to offer the preview pass for free or free after the first purchase, this masterwork of Art and Science is so good, buying complete tracks are a no-brainer. Also, I would not want anyone to be put off from this app because of it, and finally I believe the Devlpr will be rewarded for his/her extension of grace.

DremWkr about Naturespace: Relax Sleep Dream, v5.1