melody

/ˈmɛlədi/

a succession of notes forming a distinctive sequence

中文释义：旋律；曲调

The melody of the song was so catchy that I couldn't get it out of my head.

这首歌的旋律非常上口，我无法把它从脑海中抹去。

She composed a beautiful melody for the piano piece.

她为这首钢琴曲创作了一段优美的旋律。