This is a documentary from 2008. I watched it this week and was pretty blown away in many ways. It brought to light what awesome, talented musicians were around in the 50's-60's that very few have heard of. It also blew my mind finding out that a huge chunk of bands and singers used them on their albums. The Beach Boys, among others, didn't actually play on their albums. I recommend watching it, if you have the means to. https://www.amazon.com/Wrecking-Crew-Brian-Wilson/dp/B00UMX6WPC