You can pretty much follow Top 40 radio through the years via this website:
http://www.oidar.com/WELCOME.htm
It's amazing how one man's insights into the broadcast industry can teach you so much about radio, and CHR radio, as a whole.
http://www.oidar.com/WELCOME.htm
It's amazing how one man's insights into the broadcast industry can teach you so much about radio, and CHR radio, as a whole.