noun
glockenspiel
A percussion instrument consisting of tuned metal bars arranged like a keyboard, played with mallets. In Japanese, it is often associated with orchestral or educational settings.
from German
小学生のとき、音楽の授業でグロッケンシュピールを演奏した。
When I was in elementary school, I played the glockenspiel in music class.
鉄琴 is a broader Japanese term for metallophones, including the glockenspiel, but グロッケンシュピール specifically refers to the Western orchestral glockenspiel.
シロフォン (xylophone) has wooden bars, while the glockenspiel has metal bars and a brighter, more bell-like tone.
Borrowed from German 'Glockenspiel', literally 'bell play'.