Mark also learned Bluegrass fiddling at the feet of Doc Watson a blind flat-picking guitar virtuoso.

I may have relayed this tidbit about Mark before (keep your receipts handy) but Mark had a very unorthodox method of holding his fiddle. When seated, he would pull the butt-end (Mods, that's not profanity. Holster them shootin' arns pawdna!) firmly into his gut then lay forward over it's length and play the snot out of it.