 Electronic libretto

An electronic libretto system is used primarily in opera houses and is a device which presents translations of lyrics into an audience's language or transcribes lyrics that may be difficult to understand when sung.Since 1983, projected "supertitles" or "surtitles" have been commonly used in opera or other theatrical and musical performances and they have proven to be a commercial success in art forms such as opera which are generally performed in their original language.