my "fastest" accomplishment, as far as learning to play it was probably the bass part for "hot pink" by the Meat Puppets.that took about thirty minutes. Coincindentlly(cant spell), my "fastest" accomplishment for playing speed was also by the Meat Puppets, "Sam".(i did this version of it on my four-track with a banjo-voiced keyboard playing the vocal part. it was horrible, but it was fast..) 