Low pitch
It's Baritone
Primary waves
He is a high baritone, more of a second tenor type of voice
That's a cheap imported low-end brand. Keep looking.
His voice type is baritone/tenor
Bass Baritone
High Baritone
seismic waves and pressure waves it depends on intensity of the earthquake
Baritone.
Tenor
The best brand for a baritone is selmer. the best brand is def king or bach
usually brass