Sperm whales have been found to have vowel-like sound elements.

Scientists from Project CETI and the University of California at Berkeley have identified new structural elements in sperm ...
Psychology Today

The Consciousness Code: Sound Frequency and Synchronicity

Written by Bernard D. Beitman M.D. and Ruslana Remennikova, MS. Since the beginning of human civilization, history has shown a correlation between sound and cognitive, mental, and physical wellness. 1 ...