Everyone from Charles Darwin to modern neurologists will tell you that humans evolved the ability to make music so they can get laid.
Starting about 40,000 years go, some caveman picked up a rock, hammered out some phat beats on a log and not only invented music but also groupie culture. And it worked the other way, of course. Some cavedude found himself seduced by the proto-singing of a hot mama down the gully and was soon presenting her with nicely arranged bouquets of freshly dead warthog feet.
Let’s fast-forward to today. How can someone as ugly as Mick Jagger keep attracting the hottest women on the planet? With the music he makes. (I have this theory that part of the reason rock’n’roll evolved was so ugly dudes could have sex, too.)
And we don’t even have to look at humans. Why to birds sing? To attract mates (read: to get laid.)
Case closed, right? Music is all about sex.
Well, maybe not. From the BBC: