music; CL:張|张[zhang1],曲[qu3],段[duan4]
音 (yīn) · 9 strokes
Originally the same as 言 (speech) but with an extra line added in the mouth (口) to distinguish the two characters.
乐 (Lè) · 5 strokes
Pictograph of an ancient wooden stringed musical instrument. The simplified character 乐 was adapted from the cursive form of the traditional character 樂.