Who was first DJ in the world?

It's impossible to definitively say who was the first DJ in the world. The concept of a DJ evolved gradually, and there were many individuals who played music for audiences in different ways before the term "DJ" was even coined.

Here are some key figures and events that contributed to the development of DJing:

* Early Radio Pioneers (1920s-1930s): Radio broadcasters played records and introduced different styles of music to the public. However, they often played pre-recorded programs and lacked the interactive element that later became synonymous with DJing.

* Record Hoppers (1940s-1950s): These individuals, mostly in the US, would play records at dances and parties, selecting songs based on the crowd's preferences. They are often considered early precursors to DJs.

* The Birth of "DJ" (1950s-1960s): The term "DJ" started appearing in the US, particularly in the context of radio disc jockeys who played popular music and interacted with listeners.

* Club Culture and the Evolution of DJing (1960s-1970s): As nightclub culture emerged, DJs became more prominent, using turntables to mix and blend different tracks, creating unique soundscapes.

Therefore, there's no single person who can be crowned the "first DJ." Instead, the concept of DJing emerged through a series of innovations and evolving practices across different cultures and eras.