Opera crossover singers

Kathryn Grayson (born Zelma Kathryn Elisabeth Hedrick; February 9, 1922 – February 17, 2010) was an American actress and coloratura soprano.
From the age of 12, Grayson trained as an opera singer. She was under contract to Metro-Goldwyn-Mayer by the early 1940s, soon establishing a career principally through her work in musicals. After several supporting roles, she was a lead performer in such films as Thousands Cheer (1943), Anchors Aweigh (1945) with Frank Sinatra and Gene Kelly and Show Boat (1951) and Kiss Me Kate (1953), both with Howard Keel.She also worked in theatre, appearing in Camelot (1962–1964). Later in the decade, she performed in several operas, including La bohème, Madama Butterfly, Orpheus in the Underworld and La traviata.

Les Stentors are a 4-member vocal super group made up of operatic voices from all regions of France.
Their self-titled debut album, Les Stentors, was released in 2010. Their second album Voyage en France, released on 14 May 2012, was an immediate success, shooting straight to #1 on the SNEP, the Official French Albums Chart, in its first week of release.

Vittorio Grigolo (correctly Vittorio Grigòlo, born 19 February 1977) is an Italian operatic tenor.

Alessandro Safina (Italian pronunciation: [alesˈsandro saˈfiːna]) is an Italian operatic pop tenor.
Born in Siena, Italy, Safina has sought to combine his interests in opera and modern pop music.