Prohibition of alcohol helped Jazz grow because it was often played in speakeasies and at many 1920s parties, it also derives from slavery when slaves sang the blues. This later evolved into the jazz genre or dixieland one genre was called I believe, some iconic Jazz artists include Louis Armstrong and Billie Holiday who was a blues singer
If fear wasn't a factor and I couldn't fail, I would try out singing in front of people and I wouldn't question my desire to be an actress because I'm a shy person but I'm a good actor ( at least that's what I think ) so I often question if I would make it.
Also, I absolutely LOVE your drawings !!