If I can't practice for a long time,will my skills degrade,

You’re right Jaya. All accomplished musicians develop the habit of mental practice, whatever instrument they play. This is a great help in times where there is no opportunity to stay in physical practice. Lee Sankey has written a fascinating e-book on the subject called Brainstruments. He interviewed many famous jazz musicians including Branford Marsalis, Howard Levy and Brian Blade. All of them described an individual mental model which they play in their mind’s eye, so they can practice mentally as well as physically. It’s well worth trying this if you don’t already do it.

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