Operatic pop representative of the subgenre. In the 2000s, singers and singing groups devoted primarily to operatic pop built on this renewed success. Groups like Il Divo and Amici Forever have achieved popularity with the mix of "contemporary pop with operatic style" characteristic of operatic pop. The subgenre is often performed by classical crossover singers and acts, although that field is much broader in the types of music it encompasses. "Popera" performances, such as those by the Three Tenors, have reached larger audiences and brought in greater profits than typical for operatic music. Notable operatic pop solo singers include: Notable operatic pop
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.