Your mind is able to tune in to the deeper Consciousness and can be used as an instrument.

你的头脑与更深的意识对频，头脑被作为一个管道使用。

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D. candidate in biomedical science, says that playing an instrument requires the use of multiple senses, and that practicing regularly can fine-tune those senses over time.

他说弹奏乐器会调动多种感官，经常弹奏则能让这些感官更加协调。

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Bygones are bygones. They are like the crescent-shaped musical instrument of an old friend, which will resume its playing at a certain point in another manner after completing one tune.

过去的故事已远去，像那张故人的月牙琴，已结束了故事，还将以另一种新的姿势在某种时刻继续。

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So he invariably asked to have a second piano onstage, because midway through a recital Liszt's powerful playing would result in broken strings and an instrument that was hopelessly out of tune and quite unplayable.

WSJ: When Two Makes Perfect | By Byron Janis