Gershwin's An American in Paris
Classical music are (almost) defined as those scored to be replayed. Jazz, on the other hand, blew this wall open by improvisation. This makes jazz infinitely more adaptable. For example, if you swap the French horn part in Tchaikovsky’s Symphony No. 5 to Oboe, purists might want to put you on a murder list. But in jazz, rewriting, embellishing, and reinventing are celebrated. A pianist can take a popular jazz standard and spin it into a dazzling, virtuosic variation, and nobody bats an eye....