I am not qualified to speak about Sama veda but I can definitely urge you to listen to it and then you will know what is relaxing music is.
If you don't believe in vedas, at least you can listen to this piece of music. I am sure you will be pleasantly surprised by its effect on your muscles and nerves.
It calms your mind instantly and slows down your heart beating rate to a healthy pulsation. Healing music is a proven side-effects free remedy for stress and anxiety.