Tip: How to authorize anacrusis (弱起拍)

In music, an anacrusis (also known as a pickup, or fractional pick-up) is a note or sequence of notes, a motif, which precedes the first downbeat in a bar in a musical phrase.

To use 弱起拍 (anacrusis, pickup) before the start, specify 4/4,4. For example, the following of the two songs has such 4/4,4:

• https://github.com/suntong/jianpu/blob/master/Friends-朋友.jp
• https://github.com/suntong/jianpu/blob/master/yxdcb-隱形的翅膀.jp

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