Artisan Luthiers - Bass player? Yes, Nike made a shoe style for you. See the Nike Dunk SB mid “Fender Bass” design. It's been out of production for awhile but you can
Size 12 - Nike SB Dunk Mid Pro Fender Bass for sale online | eBay
Size 13 Nike Dunk Low Michigan for Sale in Hardeeville, SC - OfferUp