UnScramble this Word: s e r d t e p e?

Questions

Name 70s tune: "I'm looking at my girlfriend -- she's passed out on the floor."?

Name 70s tune: "Mother Mary comes to me..."?

Name 70s tune: "Tell me more, tell me more, like does he have a car"?

"How'd you get those pants so tight"?

Didn't get to tell him all the things I had to say?