Academy awards: what won best song in 1973?

Questions

They have such hits as "Tom Sawyer" and "Nobody's Hero".?

Madonna's album where you can find "Rain" and "Deeper and Deeper"?

Malcolm & Angus Young are members of this famous Australian group?

Eric Clapton's 1973 comeback concert was staged at this London venue.?

In response to his success, he said "Im a schmoozer, so why dont you rock me"?