He played his ukulele on the beach and attracted a crowd of onlookers.

ukulele 是一种小型四弦吉他，源自夏威夷。"uku"在夏威夷语中意为"跳蚤"，"lele"意为"跳跃"，合起来形容演奏时手指在琴弦上快速移动的样子。这种乐器音色明亮欢快，常用于流行音乐和民谣演奏。