In music, syncopation includes a variety of rhythms which are in some way unexpected in that they deviate from the strict succession of regularly spaced strong and weak beats in a meter (pulse).

• 切分音是一个相同音高的音符同时出现并结合在强拍或次强拍和弱拍上，因此会导致乐曲进行中强拍和弱拍易为位，强拍变成弱拍，或弱拍变成强拍，叫做切分音。