Les Stentors

Les Stentors are a 4-member super vocal group made up of operatic voices from all regions of France.

Their debut album was in 2010 when they released their self-titled album Les Stentors. Their second album Voyage en France was released on 14 May 2012 and was an immediate success shooting straight to #1 on the SNEP charts, the Official French Albums Chart on its first week of release.

Source: http://en.wikipedia.org/wiki/Les_Stentors