I have started a post early on in my ebolatone.blogspot.com site regarding the spirituality of sound and music, from the technical standpoint. Here are some sound-oriented meditations from the "Centering" section of the book "Zen Flesh, Zen Bones".
14. Bathe in the center of sound, as in the continuous sound of a waterfall. Or, by putting fingers in ears, hear the sound of sounds.
15. Intone a sound, as a-u-m, slowly. As sound enters soundfulness, so do you.
16. In the beginning and gradual refinement of the sound of any letter, awake.
17. While listening to stringed instruments, hear their composite central sound; thus omnipresence.
18. Intone a sound audibly, then less and less audibly as feeling deepens into this silent harmony.
56. With mouth slightly open, keep mind in the middle of tongue. Or, as breath comes silently in, feel the sound HH.
65. Center on the sound a-u-m without any a or m.
66. Silently intone a word ending in AH. Then in the HH effortlessly, the spontaneity.
89. Stopping ears by pressing and rectum by contracting, enter the sound of sound.
105. Enter the sound of your name and, through this sound, all sounds.
Know that Japa meditation centers upon the sound "AH". Tibetan and other practice state that AH is (part of?) the sound of the name of God. The letter A is the most auspicious. Note that many of the great Avatar names contain this sound of God: Yeshua, Krishna, Ganesha, Shiva, Ra, etc.
Moving into the space behind space, through meditation or visualization, intone this sound and join all who do so and glory in God.
Mr. Roberson states:
"Music is the most transcendent expression of energy that you experience in your daily life. Music is the language that bridges all dimensions of existence — intensely personal and gloriously communal — there is no complexity of thought and emotion that music can not communicate. Singing raises your vibration, activates your throat chakra, and tunes your heart. The beat has accompanied humanity’s practice of ritual ecstasy from the bonfires to the dance floors."
"Creativity is your link to Divinity."
http://sladeroberson.com/prayer/songs-that-shift-your-spirits.html
Please see the previous post for the entire list of Centering meditative practices.
See the following for my semi-technical monologue:
http://ebolatone.blogspot.com/2009/09/highly-unfinished-will-be-finished-at.html
