From intellectualtakeout.org, this article was very very good.
“Throughout grade school and high school, I was fortunate to participate in quality music programs. Our high school had a top Illinois state jazz band; I also participated in symphonic band, which gave me a greater appreciation for classical music. It wasn’t enough to just read music. You would need to sight read, meaning you are given a difficult composition to play cold, without any prior practice. Sight reading would quickly reveal how fine-tuned playing “chops” really were. In college I continued in a jazz band and also took a music theory class. The experience gave me the ability to visualize music (If you play by ear only, you will never have that same depth of understanding music construct.)“