#TellAlice When I was a child my family (through nepobaby connections) had access to a machine that could change the speed and pitch of a recording independently. It was a black box that looked very similar to a CD or dvd player of the time.
It was mind blowing to other theatre kiddies. I could take an existing piece of music and make it any key I liked. Giving me a pretty much endless supply of backing tracks that other singers didn't have access to. I could make a backing track in my chosen key and tempo from an instrumental track. This was unheard of.
But this is just what the 2x button on a streaming service does? Absolutely. It's now something we do every day without thinking.
