The Global Beat Metallophone features aluminum alloy bars tuned to A440, designed for outstanding tone and sustain, plus note name stamped in the middle of each bar and inside of each resonator chamber for easy pitch recognition and easy, correct bar placement on the instrument. All-glued resonator box construction features mallet storage plus flexible rubber pin construction for easy bar placement and removal. Each diatonic Global Beat Metallophone includes two F# and one Bb bar plus one pair of mallets.