I play the piano, mostly stuff ranging from Chopin, Rachmaninoff, Ravel, Schumann, etc.. I occasionally also transcribe modern music I like onto piano.
On the other hand I absolutely dislike music grades/levels, not the tests themselves but what people treat them as, which ruins everything. I took the ABRSM tests when I was young and passed piano grade 7 in practical, and grade 5 in theory. But people's general reaction, such as my classmates, were: "Oh, but I have a grade 8 pass", "pffft, can you play Liszt?", "look at that 8 year old child, he can play better than you."
I am aware of the positive impacts and responses but those just ruined everything. To further worsen the issue, people with no understanding of making/playing music judge individuals solely with these "grades".