旋律是乐音在一定的节奏基础上的单维延伸,它由音高线与节奏两个要素组合而成。音高线也叫旋律线,即乐音运动的轨迹;节奏指音乐中交替出现的强弱与长短现象。 Melody is a one-dimensional extension of the music based on a certain rhythm, which is composed of two elements of pitch line and rhythm. Pitch line is also called the melody line, that is, the trajectory of musical movement; rhythm refers to the alternating music in the strength and length of the phenomenon.