1920s
In the 1920s, the expansion and popularity of recorded music—previously made with the use of clumsy acoustic devices—skyrocketed due to the invention of the electrical microphone and electronic amplifier. These devices were able to pick up a much better and more natural sound.
Carbon Microphone by Western Electric, Model 387 :
Electrical microphones led to a dramatic change in the performance style of singers, while electronic amplification had a wide-ranging impact on the development of broadcast radio and home record players.
The record music world was now an untracked land full of opportunity, making way for the popularization of genres like Jazz, Blues, Broadway, and Dance Bands.
British Dance Band from Leeds in 1925:
The final influence on the music industry came near the end of the decade when silent movies turned into talkies, incorporating recorded sounds and creating a whole new venue for the distribution of popular music.
Movie versions of Broadway musicals became extremely popular and introduced different genres to audiences across the world.
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