Doyoueverpracticeplayingthepianoinyourmindbytappingonim...
问题详情：Doyoueverpracticeplayingthepianoinyourmindbytappingonimaginaryblackandwhitekeyswhenyouhavenopianoinfrontofyou?It’snotunusual--greatpianistslikePolish-AmericanArthurRubinsteinsometimesusedtopr...