Geographic Tyrrivia: The tallest building in the Southern Hemisphere is in which city??

Questions

Category: Name That TuneCategory: Name That Tune: "But the secret is still my own, and my love for you is still unknown..."?

Category: One Hit Wonders: Founding member of Sweeney Todd who went to #1 with "Hot Child In The City"?

Category: One Hit Wonders: Inspired by a classic movie of the same name, it was Bertie Higgins #8 hit?

Category: One Hit Wonders: Nick Hayward's old band who hit in 1982 with "Love Plus One"?

Category: One Hit Wonders: The soul ballad of love gone wrong which Oran "Juice" Jones hit with in 1986?