Kronos ~ handmade fretless guitar by William Jeffrey Jones "I've not much to say that this instrument can't say on its own. This amazing guitar is a semi-hollow, fretless, 6-string, revised Kronos design. A center block runs down the middle of the body until just beyond the string ends. The rest is completely hollow. I've even gone so far as to carve out the backside of the walnut top for a better acoustic response."