 Billboard 's editorial changed focus as technology in recording and playback developed . It covered " marvels of modern technology " like the phonograph , record players and wireless radios . It began covering coin operated entertainment machines in 1899 and created a dedicated section for them called " Amusement Machines " in March 1932 . Billboard began covering the motion picture industry in 1907 , but ended up focusing on music due to competition from Variety . It created a Billboard radio broadcasting station in the 1920s . 
