Andre Previn — German Musician born on April 06, 1929,

André George Previn, KBE is a German-American pianist, conductor, and composer. He is considered one of the most versatile musicians in the world and is the winner of four Academy Awards for his film work and ten Grammy Awards for his recordings (and one more for his Lifetime Achievement)... (wikipedia)

I don't even have a cell phone. I don't know how they work.
When I composed, I heard my music played by the orchestra within days of completion of the score. No master at a conservatory, no matter how revered, can teach as much by verbal criticism as can a cold and analytical hearing of one's own music being played.
A Beethoven symphony should be rehearsed like chamber music, only for a lot more people.
I have a great many shortcomings, but writing for something on time has never bothered me.
I've had the healthy and sobering experience of constantly working with music that is invariably better than any performance of it can be.