In terms of pop and rock musical hits, what is the most successful recording duo of all time?

In 1956, a certain Elvis record was a two-sided Billboard #1 hit for 11 weeks. This string of longevity held up until 1992, when a certain record was #1 for 13 weeks. In March, 1993, another recording surpassed that achievement, by staying at #1 on the Bi

In the 1870's, Gilbert and Sullivan wrote an operetta about robbers on the high seas. In the 1970's, a very well-known singer made her Broadway debut performing it. What was the title, and who was this singer?

Who played the film role of the nervous parents in the 1991 movie, Father of the Bride ?

Which actor played the role of Officer Gannon on TV's Dragnet, and the role of Sherman Potter in M.A.S.H.?

This operatic tenor who died in 1921 was the first singer ever to sell over one million records. What was his name?

In terms of number of gold or platinum records for recorded music, singles or albums, what are the three all-time leading performer or groups?