What is the definition of breakdown as a musical form?

A variety of works qualify for protection under the 1988 Act and different copyright term lengths apply for each type of work. The types of work eligible for protection are literary, dramatic, artistic or musical works, the typographical arrangement of a published edition, a sound recording, a film or a broadcast. Films made before 1 June 1957, when the Copyright Act 1956 (the 1956 Act) came into force are not protected as a film. They are either protected as a dramatic work or as a series of photographs. Broadcasts made before 1 June 1957 were also not protected. In the 1988 Act, separate provision was made for material distributed by cable television providers as a copyright for cable programmes. This ran for the same term as a broadcast. However protection for cable programmes did not subsist until 1 January 1985. Later amendments rolled the concept of a cable programme into the definition of a broadcast.