American musician Raymond Scott was one of the most important composers of the Twentieth Century because had a knack for constant innovation and writing music for emerging media. I can’t think of any other composer who was so ahead of his time while also being so recognizable.
In the 1930s the Raymond Scott Quintette played original novelty pop tunes that combined experimental textures, frenetic tempos and appropriated jazz riffs. He played regularly on radio and film; selling a lot of records in the process.
As jazz continues to evolve, what becomes a standard in the jazz repertoire has also changed.
One of the most remarkable things about jazz in '40s and '50s was how musicians could appropriate a popular song and turn it into a jazz composition. It was a beautiful artistic juxtaposition - someone could hear a song sung in a film or on a Broadway stage, and then the same night hear that song turned into a bebop tour-de-force in an after-hours jazz club.
For a thousand years, there has been a division between musicians who could read music and those who played by ear. Both skills are essential, and so the music industry has become a strange world in which the literate and illiterate coexist.
Music reading is useful because it is so efficient. When the music is written down, composers don’t have to take the time teach their music to the musicians, and musicians don’t have to rely on memory to play their parts.