A musician is musical when their music making elicits an emotional response from players and listeners. To be musical is to “make music like God makes trees” – that is, in a manner and style that is natural and consistent with the performers personality, intellect and intimate emotional capacity. Being musical is more than juggling notes. One’s music making should awaken the soul.
Frank Battisti, from Eugene Migliaro Corporon, “Principles for Achievement, Enhancing Musicianship and Valued Colleagues,” in Teaching Music Through Performance in Band, Vol. 8.