Yamaha keyboard glockenspiel celesta with 56 keysIntroducing the Yamaha keyboard glockenspiel celesta with 56 keys The Yamaha CEL56PGL keyboard glockenspiel is a beautifully constructed instrument. It is made entirely by hand, in very limited numbers and generally to special order. A Celesta represents a significant investment for any school or orchestra and are purchased to add a distinct tonal colour and sound variation to any piece which calls for it. The CEL56PGL is, what Yamaha would describe,