When did you know you're different?

It was when I liked Emerson, Lake and Palmer more than the Beatles, Rolling Stones and others. Soon after it was (then) Walter Carlos and his take on Beethoven and I was on my own as Classical music took over my life for a while.

In my neighborhood, that made me sort of an outcast.

All the best,
Nonoise

One day, almost exactly 40 years ago, I walked uptown and went into the College bookstore. I bought the 9 symphonies of Beethoven, the Mahler 9th, and the Bach Johannes Passion for a total of $16. Though I did not know it at the time, that was the beginning.
A year later, I was a bit of a loner, known only to others in the dorm as that guy that listens to Beethoven all the time. I knew I was different when I recognized that my dorm mates no longer knew my name.

Didn't the movie Clockwork Orange make Beethovan famous?

That movie was so controversial that they were IDing every person, no matter how old they looked. I couldn't get in so I can't comment.

Kubrick. Worth getting the DVD.