Abt Vogler feels this as he plays on the instrument he made.

Any musician who plays on two instruments knows that the distinct instrument does distinct work, and loves each instrument for its own spirit; because each makes his art, expressed in it, different from his art expressed in another.

Even the same art-creation is different in two instruments: the vehicle does its own part of the work.

Any painter will say the same, according as he works in fresco or on canvas, in water-colour or in oil.

Even a material like charcoal makes him work the same conception in a different way.