Fach

The German Fach system (German pronunciation: [fax]; literally "compartment" or "subject of study", here in the sense of "vocal specialization") is a method of classifying singers, primarily opera singers, according to the range, weight, and color of their voices. It is used worldwide, but primarily in Europe, especially in German-speaking countries and by repertory opera houses. The Fach system is a convenience for singers and opera houses. It prevents singers from being asked to sing roles which they are incapable of performing, or roles for which their vocal timbre is dramatically unsuited.