My ex-girlfriend and I used to talk about figuring out how to play "Black Sabbath" on accordion and bass guitar (or theramin, when I was obsessed with the theramin). She'd worked out the riff that comes right before the line "Could this be the end, my friend" on a 120-bass accordion and it sounded much, much better than these two doing a half-assed "Sweet Leaf."
Instead, I learned to rap. Worked out better, really.