树铃是一种打击乐器，由倒置的金属碗垂直串在一起组成。碗的数量大约在14个到28个之间，串在一根竖直的棒上，以音高顺序排列。树铃通常用来强调乐段的开端或结尾，创造一种“明亮”、“闪烁”的效果，增加音乐的复杂性。

A bell tree (often confused with the mark tree) is a percussion instrument, consisting of vertically nested inverted metal bowls. The bowls, placed on a vertical rod, are arranged roughly in order of pitch. The number of bowls can vary between approximately 14 and 28. An effective glissando is produced by sliding a triangle beater, a glockenspiel mallet, or a xylophone mallet down the length of the tree. When a glissando is played, the inexactness of the order of the bowls' pitch is unnoticeable, merely creating a fuller sound.