Original instruments

Historically informed performance (also referred to as period performance, authentic performance, or HIP) is an approach to the performance of classical music, which aims to be faithful to the approach, manner and style of the era in which a work was originally conceived.

Historical treatises, as well as additional historical evidence, are used to gain insight into the performance practice (the stylistic and technical aspects of performance) of a historic era. HIP is usually played on period instruments which are modelled after examples from earlier in history, which usually have different timbre and temperament. Just as important as using 'correct' instruments is conducting research into the performance practice (the stylistic and technical aspects of performance) of a historic era, for instance by reading historical treatises on music. HIP performers will normally base their interpretations on scholarly or urtext editions of a musical score, unencumbered with suggestions or changes made by editors in later eras.

Historically informed performance can trace its roots to the late 19th century, but principally developed in a number of Western countries in the late 20th century. Initially mainly concerned with the performance of Medieval, Renaissance, and Baroque music, it has since come to encompass music from the Classical and Romantic eras as well. Quite recently, the phenomenon has begun to affect the theatrical stage, for instance in the production of Baroque opera, where historically informed approaches to acting and scenery are also used.

There are some critics who contest the methodology of the HIP movement, contending that its selection of practices and aesthetics are a product of the 20th century and that it is ultimately impossible to know what performances of an earlier time sounded like.

Historically informed performance needs to access musical instruments corresponding to the period of the music being played. This has led to the revival of musical instruments entirely gone out of practice, and to a reconsideration of the role and structure of instruments also used in current practice.

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