Studio 49 22 Note Alto Chromatic Glockenspiel Double row Studio 49 complete chromatic alto glockenspiel, range C2 to A3 (22 bars). Nickel-plated special steel alloy bars, on two all-wood resonator boxes. Studio 49 glockenspiels have a mellower sound than other glockenspiels. Includes one pair of Studio 49 plastic mallets.