"Music and the Soul," Kurt Leland,
"The Secret Power of Music," David Tame,
"The Third Music," Ann Ree Colton, and
"Creation: Artistic and Spiritual," O. M. Aivanhov, might be interesting.
http://www.divinecosmos.com
We are immortal, but are enmeshed in lower maya.
"Climb the Highest Mountain," Mark Prophet, is another good source.