What are your favorite 50's and 60's bands/artists?

I have a few that I like, (The Four Tops, Frankie Valli & The Four Seasons, The Ventures, Bobby Vee, The Supremes, The Beach Boys, Gene Chandler, The Cleftones, The Monotones, The Platters, Patsy Cline, The Marcels, The Drifters, and The Everly Brothers) but I'm looking to broaden my horizons. Any suggestions would be great!