The 190M37X series professional Bb trumpet is a versatile addition to the historic Bach Stradivarius trumpet family. This 190 series features a .456" medium-plus (M+) bore design that can provide orchestral players a well-balanced for larger mouthpieces for excellent sound and agility while giving commercial players a compact and focused sound that works well in the upper register. The medium-plus bore offers the efficiency of a medium bore with the breadth of sound associated with a medium-large bore instrument. The one piece yellow brass bell features a French bead to provide outstanding projection while the narrow wrap nickel Z bracing aids in creating a quick response. The two-piece valve chassis features nickel balusters, lightweight nickel inner valve slides and brass top and bottom valve caps offers a more vibrant sound. All of this combines to produce a trumpet with the efficiency and brilliance of a lightweight medium bore instrument without sacrificing the rich core and full, warm sound of a standard-weight medium-large bore design.