Crossword puzzle clue "one named r b singer with feel so high"

Early and influential stand-up comedian Mort who said, "Liberals feel unworthy of their possessions. Conservatives feel they deserve everything they've stolen" haha I feel that

1959 hit with the lyric "One day I feel so happy, next day I feel so sad"

One-named "I Do!" singer named for a Jackson

Ratt "Feel the heat of the rhythm. Feel the heat of my hand. ___"

One-named German singer who was a one-hit wonder

When you're feeling this way, just hum a happy tune and you'll feel high as a kite!