Christian chant is a form of vocal music used in Christian worship, characterized by its simple melodies and monophonic texture. It often involves singing in unison, without instrumental accompaniment, and is typically performed in a sacred setting. The most well-known type of Christian chant is Gregorian chant, which originated in the early Middle Ages and is named after Pope Gregory I. These chants are usually based on sacred texts, such as psalms or hymns, and are intended to enhance the spiritual experience of worship. The use of Latin in many chants reflects the historical context of the Church, while modern adaptations may incorporate vernacular languages.