Mozart wrote so many works in his thirty-five years that it would take a lifetime just to write out the notes. We literally do not know how he did it.
Why do we pigeonhole and label an artist? It is a sure way of missing the important, the contradictory, the things that make him or her unique.
Personality is essential. It is in every work of art. When someone walks on stage for a performance and has charisma, everyone is convinced that he has personality. I find that charisma is merely a form of showmanship. Movie stars usually have it. A politician has to have it.
The fact that Stravinsky used the classics as a major influence is obvious. What is interesting is how he used them, how he turned Bach into Stravinsky.
The creative act is like writing a letter. A letter is a project; you don't sit down to write a letter unless you know what you want to say and to whom you want to say it.