Well, I guess someone had to do it! Here is an hours worth of samples of No. 1 hit singles from the 60s on: http://soundcloud.com/mjs538/five-seconds-of-every-1-pop1
http://soundcloud.com/mjs538/five-seconds-of-every-1-pop
http://soundcloud.com/mjs538/five-seconds-of-every-1-pop
