music: 70's Chart Toppers: Name The Artist: Hot Blooded?

Questions

She was married to both George Harrison & Eric Clapton.(not at the same time)?

She wrote the song "Wind Beneath My Wings"?

Side project with 3/4 of REM?

Sinatra had a hit duet with this singer on "I've Got You Under My Skin."?

Singer leads a group of prostitues against a ruthless pimp.?