When playing music the ear responds most sensitive to an unnatural sound. The more the brain is busy to correct errors, to interpret the received signals properly, so strenuous is listening to us.
Only when a speaker can reproduce the pure sound, the dynamics and the richness of detail of an instrument with all the overtones, then we can relax and completely surrender to the fascination of music.
A loudspeaker, which gives a genuine musical experience provokes emotions, which otherwise are heard only at concerts.