I would say those who study music (classical) at young age come from quite wealthy families, which mean easier access to resources, e.g., books, good schools, dedicated teachers, etc which could eventually lead to better iq test results.

Piano helped me incredibly as an emotional outlet, I wasn't good and can't really play anything without music, but it gave me a tool for cathartic expression.

That might have helped with school studies and such?

I played piano also, but only because my parents prodded me to (not forced, but essentially told me I ought to do and hired a teacher so I'd have to show progress at weekly intervals).

I didn't like it at all. To this day I still have an adversity to touching a physical instrument because of the memories I had of being 12, trying to challenge myself to playing a piece I liked and completely failing to reach a competent level, because I actually didn't care enough about piano as opposed to spending my time on transient time-wasters like television shows about video games, and I knew that I didn't care enough to get good, but I was encouraged to challenge myself anyways, and then I felt inferior because of seeing all the people the same age or younger around me that handled pieces many times more difficult with ease.

I hated being told that I did great by everyone after a recital where I ended up pausing in silence for an entire minute, because I knew they were only trying to keep my mood from deteriorating afterwards and because I personally knew from the heart that I did not do anything resembling "great."

Then I joined wind ensemble in high school.

As a result I can't listen to classical music without anxiety bubbling up any longer because of the ingrained memories of being pushed to be better than other people and being compelled to get into regional division X and not realizing that as someone without a purposeful devotion to music all of that was hopeless to accomplish from the start, such that the disappointment in my lack of abilities that followed was inevitable.

There should be more than two lines of codes added anyway: whenever I can I add as much as automated tests as needed to check that the bug has really been removed.