Recently I had a long playing day with a three hour rehearsal, an hour break, and then a two hour plus concert. The performance included Dugas’ the "Sorcerers Apprentice"and other works, including sing along Christmas material (which went on and on) and other crowd pleasers. There were many modulations/extreme key changes, tempo changes with “quick entrances and then long rests with tricky entrances.
As the day wore on, it was more difficult to get the concentration up. Physical energy and chops were there, but entrances were getting more difficult.
I work on chops and technique daily but what do you do to work on developing your concentration for when you are not playing? How did you develop your ability to stay in the immediate of the performance? I’m not talking boredom; I’m talking about concentration for large symphony works and being in the immediate when an entrance occurs.