When you listen to music, you sometimes say this song has a nice melody. 你听音乐时，有时会说这首歌的旋律很好。

　　What is melody? 什么是旋律？

　　Melody is the radical succession of musical tones. 旋律是指若干乐音的连续进行。

　　When you hum a song, you have a melody without lyrics. 你哼一首歌时，只有旋律没有歌词。

　　What does it mean when someone says this melody is good or this melody is bad? 人们说的旋律好坏是什么意思？

　　It usually means that they like the melody or hate it. 它通常是指他们喜欢或讨厌这个旋律。

　　Does every song have a melody? 每首歌都有旋律吗？

　　Most songs have melodies but some RAP music does not use any melody at all. 大多数歌曲都有旋律，但有些说唱音乐根本不使用任何旋律。

　　And if you play the drums, you will play music without any melody. 如果你敲鼓，你演奏的音乐也没有任何旋律。