Torquato Tasso is a melodramma semiserio, or "semi-serious" opera, in three acts by Gaetano Donizetti and based on the life of the great poet Torquato Tasso. The Italian libretto was written by Jacopo

The New Grove Dictionary of Opera is an encyclopedia of opera. It is the largest work on opera in English, and in its printed form, amounts to 5,448 pages in four volumes.