I'm with others, too many to pick! Sometimes I can go for a little Andy Williams, Ol' Blue Eyes (that's Frank Sinatra to you young'uns), Nat King Cole, esp with his daughter Natalie, ABBA, Dusty Springfield, John Denver, Buffalo Springfield, Bread, Jefferson Airplane, Neil Diamond, Oliver, Scott MacKenzie (one-hit wonders) ..... Simon & Garfunkel, Moody Blues, Eagles yes oh golly, somebody stop me!
As for composers, I'll see your Beethoven and raise you a Tchaikovsky and a Rimsky- Korsakov. Maybe throw in a little Rochmaninoff while I'm at it ...