Former finance executive Jay Dweck already owns some rare violins — a Guarneri and a Stradivarius — and he just added another to his portfolio. This one, however, is a pool. Make that a million dollar pool in the shape of a violin. Call it Bedford’s Stradivarius of pools. The 1,300-square foot pool is based on the shape and color of Dweck’s Strad that dates to 1717.