A glockenspiel is similar to a xylophone, but a glockenspiel is made of metal. Xylophones are made of wood. (Look up xylophones for further information on them.) People often call a glockenspiel a xylophone when they don't know what they're talking about (wind instruments, *siiiiiiiigh*). The common name is a bell set, set of bells, or bells.