But above that, most mature adults can hold their attention on something for 45 minutes, whether they like it or not. But above that requires training.

Use your ears to record and your eyes to video.

Music so wishes to be heard that it sometimes calls on unlikely characters to give it voice.

If a professional musician in a symphony orchestra is playing Beethoven. But this particular orchestra have played this particular chestnut so many times, they can play it in their sleep. Does the genius remain present in the music or not?

If you are playing repertoire material, you're stuck. There's not huge amounts you can do.

We know others to the extent that we know ourselves.

According to USA today, the average length of an attention span of a man in America is 23 minutes.