The "12-bar blues" of jazz?
This may be a goofy question, but is there such a thing? You know how whenever a couple guys get together, the one thing they can agree on is jammin' on some 12-bar blues. Everybody knows how to play it, and has done so a million times. And everybody can fake a country song in the key of C. Is there such a standard in the jazz realm? Something easy to play that every jazz player knows and that you can get together on the first time you play together and jam away? If so, what is it?
The blues ain't about theory, they's about therapy.