Musical is anything man. As pretentious as it may sound. I can bang some shit with a hammer and call the output "Bolero of Xena" and it is musical. Lou Reed's Metal Machine Music is musical. John Cage 4:33 is musical, despite the 4:33 of silence. yeah it sounds horribly pretentious but you can't deny it. If you deny it, you're narrow minded.
Also Ryan, yeah. I also know some shapes, I can also read sheet music, but I choose not to because it bores the shit out of me and I rather play my instruments as a way to channel my inmediate emotions.
edit: also Inri Cheetos, everything I do can be explained through theory.
In fact, back then when I had a geetar profesor, I showed him my music and he was like "play that again" and would figure out what I was doing and explain everything I did through theory even though I was completely negligent at it.