The pieces in which the spirit, notation, concept, sound, come together to make something distinctive.
I think a turning point came when I discovered Mahler at age 16, that’s when I understood what music can be more fully than before.
I heard a ‘cello being played on the radio (I can’t remember who was playing) when I was about 6, and just knew that was the instrument I had to play. I fully intended to just become an internationally famous concert ‘cellist (as you do!) but gradually composing took over.