Name The Year: Karl Freidrich Benz automobile engineer (Mercedes), dies?

Questions

80's - The group Styx had a hit with a sailing song in the 1970's ('Come Sail Away'). Who sang 'Sailing' in the 1980's?

80's - Who sang 'Two Hearts'?

80's - Who sang 'Every Rose Has It's Thorn'?

80's - Who sang 'When I'm With You'?

80's - Which instrumentalist played 'Chariots of Fire'?