Iphone notification

We understand that not one performance can and will not repeat another, and everyone in the hall, together with the musicians, is involved in creating the final effect. If you tinker too much with external elements, the public may not have a general impression. If you neglect the subtle change of shades within the harmonies, the play will be much less interesting. If we are insensitive to larger structures, the work will seem trivial, as if the composer had created a long and amorphous improvisation. But how to do it right?