The 190S37 is built on an ML .459 two-piece valve chassis with nickel balusters, nickel outer slides, and brass valve guides. The Mt. Vernon weight, side-seam #37 bell with a round steel wire bell bead is paired with the classic #25 pipe for what can easily be considered the classic definition of “the Bach sound.” The wide wrap nickel Z braces, a new design, and 1st slide brace give this 37 a rich, vibrant sound that is broad, brilliant, and agile. The result is a 37 that is truly a master of all trades.