Il Divo over two million concert tickets worldwide just from their first four albums. In their first world tour, concerts in 69 cities in 18 countries were sold out. "Il Divo" is composed of four singers, three of whom are classically trained, from four different countries: German-born Spanish baritone Carlos Marín (b. 1968), two classically trained tenors Swiss Urs Bühler (b. 1971) and American David Miller, (b. 1973), and French pop singer-songwriter Sébastien Izambard (b. 1973). The idea behind "Il Divo" came when Simon Cowell, inspired after listening to the Three Tenors, decided to form a multinational quartet of talented young singers
Metro Vocal Group Barbershop and Doo-wop music. Their first contract was aboard Celebrity Cruises Mercury. After finishing the Mercury contract, Metro signed an additional contract aboard Celebrity Cruises Century for its inaugural European cruise. In 2000, the group was asked to be a part of the opening crew for the inaugural voyage of Celebrity Cruises Millennium. It was on board the Millennium where the group would find a distinct sound, adopting more of a pop rock genre, and rename themselves Metro Vocal Group. Shortly thereafter, Metro Vocal Group was hired as part of the opening crew for the Celebrity Cruises Summit's inaugural voyage.