the motion given by early conductors to guide an instrumental ensemble was called
Conducting An early form of conducting is cheironomy, the use of hand gestures to indicate melodic shape. This has been practiced at least as far back as the Middle Ages. In the Christian church, the person giving these symbols held a staff to signify his role, and it seems that as music became rhythmically more complex, the staff was moved up and down to indicate the beat, acting as an early form of baton.
Disc jockey The term "disc jockey" was ostensibly coined by radio gossip commentator Walter Winchell in 1935, and the phrase first appeared in print in a 1941 Variety magazine, used to describe radio personalities who introduced phonograph records on the air.[28][29] Playing recorded music for dancing and parties rose with the mass marketing of home phonographs in the late 19th century, and Jimmy Savile is credited with hosting the first live DJ dance party in 1943. Savile is also credited as the first to present music in continuous play by using multiple turntables. In 1947, the Whiskey A Go-Go opened in Paris as the first discoteque.[30] In the 1960s, Rudy Bozak began making the first DJ mixers, mixing consoles specialized for DJing.