When an object vibrates & pressure wave.
I can remember the high decibels of a concert, the woofers thumping, the high pitches piercing, the crowd getting excited because of the anticipation of seeing their favorite artist...

Producers

I can remember the high decibels of a concert, the woofers thumping, the high pitches piercing, the crowd getting excited because of the anticipation of seeing their favorite artist. Oh, what a feeling! Some are brought to tears, others scream and shout, a few pass out from the overexertion of finally getting the entertainment they paid a ticket for from initial purchase to live fruition. It’s the good vibrations and pressure from the sound waves and frequencies that connects with our inner being that causes the drive of enthusiasm.