Entertainment contracts are sometimes also referred to as a booking agreement, engagement contract, appearance contract, or other. By creating a written entertainment contract, you may create legally enforceable terms dealing with copyrights, liability waivers and releases, exclusive agency, licensing, performing rights, privacy rights, and any other issues affecting the deal involved. Musical composition can refer to an original piece of music, either a song or an instrumental music piece, the structure of a musical piece, or the process of creating or writing a new song or piece of music. The word "song" is widely misused by people in the popular music industry to describe any musical composition, whether sung or played only by instruments. People who create new compositions are called composers in classical music. In popular music and traditional music, the creators of new songs are usually called songwriters; with songs, the person who writes new words for a song is the lyricist. ComposerCloud is a monthly or yearly plan renewed automatically unless you cancel and costs US$29.99 per month or US$359.88 per year plus tax where applicable, and gives members instant access to everything in ComposerCloud. In some cases, a pop or traditional songwriter may not use written notation at all, and instead compose the song in their mind and then play, sing and/or record it from memory. In jazz and popular music, notable sound recordings by influential performers are given the weight that written or printed scores play in classical music. Starting with Media Composer v6, Avid has introduced a new Open IO API to allow 3rd party companies to interface their hardware into Media Composer. AJA Video Systems, Blackmagic Design, Matrox, BlueFush and MOTU are supporting this API.