Layers of Seeing

[Bob May]

I read how a famous opera singer was able to shatter a wine glass by singing a sustained note close to the glass until it was well into vibrating at that same
keynote and then abruptly changing the note he sang to a discordant harmony.


Since everything is vibration of enegy at some level and harmonics are the relationships between things, I don't think it far fetched to use sound to
encourage changes in vibratory levels of perception.