I've seen headless basses before, but never gave them too much thought. Seeing this photo made me think of a possibly good idea I thought I'd share. I just imagined a line of headless guitar/bass-es of various features 4/8 6/12 (X/X-octave doubled) fretless/fretted of various design, specially though that would attach to a body bracket so the player could create a two or three (or more?) neck guitar/bass combo by choice. I really like that "The Rail" has a moveable pickup.