What is "decet"

In music, a decet—sometimes dectet, decimette, or even tentet —is a composition which requires ten musicians for a performance, or a musical group that consists of ten people. The corresponding German word is Dezett, the French is dixtuor. Unlike some other musical ensembles such as the string quartet, there is no established or standard set of instruments in a decet.

Decet may refer to :

• In music, a decet —sometimes dectet, decimette, or even tentet—is a composition which requires ten musicians for a performance.
• Decet Romanum Pontificem (1521) is the papal bull excommunicating Martin Luther.
• Romanum decet pontificem is a papal bull issued by Pope Innocent XII (1691—1700) on June 22, 1692, banning the office of Cardinal Nephew.