2 Bells - 60 Minutes plus Dr. Brown & Gerbarg's 6 Breathing Frequencies (.mp3)

2 Bells 60 Minutes with Drs. Brown and Gerbarg's 6 Breathing Frequencies including 3.5 breaths per minute followed consecutively by 4, 5, 10, 20, and 30 breaths per minute. Each can be put on "repeat" and played seamlessly on most players. Available in both .mp3 and Apple compatible audio format. $29.