Operatic terminology

The words of an opera are known as the libretto (literally "little book"). Some composers, notably Richard Wagner, have written their own libretti; others have worked in close collaboration with their librettists, e.g. Mozart with Lorenzo da Ponte. Traditional opera consists of two modes of singing: recitative, the plot-driving passages often sung in a non-melodic style characteristic of opera, and aria (an "air" or formal song) in which the characters express their emotions in a more structured melodic style. Duets, trios and other ensembles often occur, and choruses are used to comment on the action. In some forms of opera, such as Singspiel, opéra comique, operetta, and semi-opera, the recitative is mostly replaced by spoken dialogue. Melodic or semi-melodic passages occurring in the midst of, or instead of, recitative, are also referred to as arioso. During the Baroque and Classical periods, recitative could appear in two basic forms: secco (dry) recitative, accompanied only by "continuo", which was often no more than a harpsichord; or accompagnato (also known as "stromentato") in which the orchestra provided accompaniment. By the 19th century, accompagnato had gained the upper hand, the orchestra played a much bigger role, and Richard Wagner revolutionised opera by abolishing almost all distinction between aria and recitative in his quest for what he termed "endless melody". Subsequent composers have tended to follow Wagner's example, though some, such as Stravinsky in his The Rake's Progress have bucked the trend. The terminology of the various kinds of operatic voices is described in Section 3 below.[3]