Ancient Sound Awakenings?

[Epiphany_Inspired]

My daughter and I were drawn to an audio book at the library, "Awakening Through Sound" by Chloe Goodchild (my child loves it!). This author claims that these 4000 year old sounds can help develop the " watcher" (what Eckert Tolle calls the" observer"/  "witness"), basically, our higher self beyond ego. This author uses various scales from classical Indian Music etch... Has anyone tried this vocal awakening technique? Besides being really fun for toddlers, are there any real benefits to integrating this practice? e.g...The book includes a DVD of postures which we haven't watched yet... are specific postures crucial (we've enjoyed listening in the car)?