A few of the frequencies outlined can be found from the BetterSleep app To combine with other sounds or content. Combining comforting piano music with the Solfeggio frequencies akin to the 7 Chakra’s, these tracks descends throughout the binaural beat frequencies into the theta waves ( 8hz to 4hz) https://israelinfvw.bloggadores.com/31428023/about-one-third-octave-frequencies