Portal: Musical Theatre Musical theatre is a form of theatre combining music, songs, spoken dialogue and dance. The emotional content of the piece – humor, pathos, love, anger – as well as the story itself, is communicated through the words, music, movement and technical aspects of the entertainment as an integrated whole. Since the early 20th century, musical theatre stage works have generally been called simply, "musicals".

Musicals are performed all around the world. They may be presented in large venues, such as big budget West End and Broadway theatre productions in London and New York City, or in smaller Fringe Theatre, Off-Broadway or regional productions, on tour, or by amateur groups in schools, theatres and other performance spaces. In addition to Britain and North America, there are vibrant musical theatre scenes in many countries in Europe, South America and Asia.

Some famous musicals include Show Boat, Oklahoma!, West Side Story, The Fantasticks, Hair, A Chorus Line, Les Misérables, The Phantom of the Opera, Rent, and The Producers.

Definitions

The three main components of a musical are the music, the lyrics, and the book. The book of a musical refers to the story of the show – in effect its spoken (not sung) lines; however, "book" can also refer to the dialogue and lyrics together, which are sometimes referred to (as in opera) as the libretto (Italian for “little book”). The music and lyrics together form the score of the musical. The interpretation of the musical by the creative team heavily influences the way that the musical is presented. The creative team includes a director, a musical director and usually a choreographer. A musical's production is also creatively characterized by technical aspects, such as set, costumes, stage properties, lighting, etc. that generally change from production to production (although some famous production aspects tend to be retained from the original production, for example, Bob Fosse's choregraphy in Chicago). The 20th century "book musical" has been defined as a musical play where the songs and dances are fully integrated into a well-made story, with serious dramatic goals, that is able to evoke genuine emotions other than laughter.

There is no fixed length for a musical, and it can range from a short one-act entertainment to several acts and several hours in length (or even a multi-evening presentation); however, most musicals range from one and a half hours to three hours. Musicals today are typically presented in two acts, with one intermission ten to 20 minutes in length. The first act is almost always somewhat longer than the second act, and generally introduces most of the music. A musical may be built around 4-6 main theme tunes that are reprised throughout the show, or consist of a series of songs not directly musically related. Spoken dialogue is generally interspersed between musical numbers, although the use of "sung dialogue" or recitative is not unknown, especially in so-called "sung-through" musicals such as Les Misérables and Evita.