1) Who is the lead singer of U2?
2) What year was U2's debut album released?
3) What is the title of U2's first single?
4) On what label was U2's album "The Joshua Tree" released?
5) What was the name of the U2 tribute album released in 2007?
6) What year did U2 win their first Grammy Award?
7) The lead singer of U2 is
8) U2 formed in what year?
9) U2 has released how many studio albums?
10) What was the title of U2's first studio album?