In that was he was the ideal teacher. His clarinet wisdom was infinite - he had no peer. One may say that all music written during his lifetime was written for him. Yes, that is really true. He made it all his own regardless of who wrote and for whom they wrote.
Most composers write for themselves.
Then perhaps they dedicate the work to a friend, hopefully admired, who will play the work. Performances of new music are not easily gotten. Sometimes a lover becomes involved in the conception of music, but less and less now, as the music has not that much love contained within. At thetime of his death, I was the only reasonably well-known clarinetist still concertizing on the instrument. Thanks for writing.