How did Noh theatre develop from earlier Japanese entertainments?

Noh theatre evolved from a fusion of various ancient Japanese performing arts, primarily emerging by the 14th century through the integration of dance, drama, and song.12

Its development was rooted in several earlier traditions:

• Sangaku and Sarugaku: Originally derived from Chinese "variety arts" (sangaku)—which included acrobatics, juggling, and slapstick—these evolved into sarugaku ("monkey" or "mimic music"). By the 14th century, sarugaku troupes attached to shrines and temples were performing short plays that combined dialogue, mimicry, singing, and dancing.32
• Dengaku: These were rustic harvest-related dances and celebrations that contributed musical and dance elements to the developing form.34
• Buddhist and Court Influences: Noh incorporated elements from Buddhist prayer chants, which influenced its vocal style (yōkyoku), and drew upon the masks and three-part structural concepts of the earlier court dance-drama, bugaku.2

The transformation into a sophisticated theatrical art was largely driven by the actor and playwright Kan’ami and his son, Zeami. Kan’ami notably incorporated kusemai (a chanted dance) into his plays, allowing for a more cohesive narrative, while Zeami refined the performance style and established the aesthetic principles, such as yūgen, that define Noh today.42