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.
Pop music In the 1960s, the majority of mainstream pop music fell in two categories: guitar, drum and bass groups or singers backed by a traditional orchestra.[23] Since early in the decade, it was common for pop producers, songwriters, and engineers to freely experiment with musical form, orchestration, unnatural reverb, and other sound effects. Some of the best known examples are Phil Spector's Wall of Sound and Joe Meek's use of homemade electronic sound effects for acts like the Tornados.[24] At the same time, pop music on radio and in both American and British film moved away from refined Tin Pan Alley to more eccentric songwriting and incorporated reverb-drenched rock guitar, symphonic strings, and horns played by groups of properly arranged and rehearsed studio musicians.[25]