no idea. i know you dont really need to read actual music to write and play it, as long as you can do tabs or play by ear. i also know that, at least on their first album, scott didnt know guitar, so he had to literally hum the riff he thought up for "dead & bloated" to dean or rob and get them to write it down. me and my friend sing along to the guitar like beavis and butthead whenever we hear it, in his honor.