Misc: 1990 ---------- and Morocco troops land in Saudi Arabia to prevent Iraqi invasion. ?

Questions

Barry Manilow's first #1 was this 1975 song...?

Daryl Hall and John Oates hat their first #1 in 1977 with this song...?

Lean On Me" was written and sung by this man in 1973...?

Michael Jackson was this many years old when "Ben" became his first #1 hit?

She sang with Elton John on the 1976 #1 "Don't Go Breaking My Heart"...?