It Don't Mean a Thing (if it Ain't Got that Swing) med vokalisten Louis Armstrong akkompagnert av pianisten Duke Ellington

Petikan kata-kata Duke Ellington

There are simply two kinds of music, good music and the other kind ... the only yardstick by which the result should be judged is simply that of how it sounds. If it sounds good it's successful; if it doesn't it has failed.