The smoothness of the hand’s flow while playing an instrument is called posture. The term posture denotes the position of the body while playing the instruments. The body should not be in a position that is a strain on the muscles. Good posture should be balance and relaxed. It makes it easier to breathe, it also makes it easier to blow out for the instrument.
Playing most musical instruments require having enough flexibility in the fingers to develop a good hand technique and a smooth and even sound. The fingers should be both flexible and strong enough to work quick and complex passages and scales. Flexibility can be increased by lots of practice, and through specific exercises meant to develop strong and flexible fingers to improve playing skills.
the flow of your playing, the rhythm
Took the test and got 5/5!