i accept that listening to certain of music can help with some problems, such as stress. i can also comfortable with Fettaro's claim that by reading his book, you'll be able to create a peaceful environment to help you relax your home. i found the relaxation and breathing techniques very useful. similarly, his claim that music will help you sleep better seems reasonable. i tested the "Music for Sleep" section of the cd and found that after a few nights, i did indeed sleep better. however, when fettaro goes on to promise his music therapy will help cure depression and even cancer, things start to get a litter unbelievable. there is no clear evidence for any of his claims, which rely on a series of personal success stories. "i would prefer to see details of scientific research to support his assertions, and without this i felt unable to believe many of his more extraordinary claims