It should be noted that the electric keyboard instrument first developed in the 1930s became widely used in Rock, Blues, and Gospel music is Hammond Organ.
According to this question, we are to discuss about keyboard instrument first developed in the 1930s which brought turn around to gospel music.
As a result of this we can see that Hammond Organ helped the musicians especially the gospel musician that time.
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https://brainly.com/question/14376228
