Editor's note: Yes, blue jeans and light bulbs are great, but the best thing the U.S. has contributed to the world is jazz. Louis Armstrong, who grew up in a New Orleans orphanage, started it all, and titans like Charlie Parker, Thelonius Monk, Miles Davis, John Coltrane, and Sonny Rollins carried the torch. While the catalog of great recordings is vast, jazz’s improvisational nature makes for unforgettable live performances. Get inspired with some cool Jazz wallpapers!