One thing I've been watching is this amazing documentary called "Walk On By: The Story of Popular Song" and I just finished the 60s episode. Here are two interesting things I learned:
DID YOU KNOW that the most played song of the twentieth century is "You've Lost That Lovin' Feeling" by the Righteous Brothers?
I know right! That song rules and all but I would not have guessed that in a gazillion years.
Secondly, Paul McCartney's favourite ever song is "God Only Knows" by The Beach Boys. Brian Wilson claims that Paul once said it was the prettiest song ever written. And actually, it might well be.