the Science of Sound and Music

I've been reading "This is Your Brain on Music" by Daniel Levitin . . . . fascinating and very educational for anyone interested in What is Music? Where does it come from? Why do some sequences of sounds move us so, while others - such as dogs barking or cars screeching - make people uncomfortable? Levitin is a neuro-scientist.

Here's one interesting fact . . . "A Day in the Life" from the Beatles Sargeant Pepper LP has a 15 Hz for a few seconds at the end of the song, it's inaudible to most people over 40 years old but reportedly, Lennon wanted to make peoples dogs perk up.