(flipping the chord upside down) changed the texture without changing the mood.

As he played, Leo realized he wasn't just hitting keys; he was painting. were his primary colors.

One rainy afternoon, Leo sat at the keys and started with a simple . It was bright and stable, like a clear morning. But he wanted more depth, so he lowered the middle note to E-flat, creating a C Minor . Suddenly, the "morning" turned into a "melancholy twilight."