music: 80's Chart Toppers: Name The Artist: Rocket 2 U?

Questions

Two South American countries have no coastline, Bolivia is one what is the other?

In Arthurian legend, who was the Lily Maid of Astolat?

Frank Zappa was lead singer with which band?

Which small republic is situated on the slopes of Monte Titano in Italy?

By which name is Mendelssohn's Third Symphony known?