双撞double knock

Pinyin: shuāng zhuàng

Left hand, sliding

Two knocks in a row on the same note.

How it is played

After the stopped note sounds, the left finger knocks twice in succession: up and back, up and back again. Both must be brief and leave no trace, coming from the fingertip rather than the whole hand. The old handbooks warn that it slips easily into vulgarity and should be used sparingly and lightly.

How it sounds

Two brief upward inflections in a row on the main note, livelier than a single knock.

Where sources disagree

How much is too much

Easily confused with

References