My younger sibling is graduating from high school and going to college to major in biology! To celebrate, I made this just-for-fun collection of basically every music video I could find. Find more on her youtube channel at: https://www.youtube.com/channel/UCgMfuASrJIlkJLWtGYGBl-g
Special mentions:
Zelda Medley (violin, piano, ukulele, ocarina): https://www.youtube.com/watch?v=2wSh72zMXaw
RWBY This Will Be the Day (violin, piano): https://www.youtube.com/watch?v=6wEgra1yYOc
It's Over, Isn't It (piano, Steven Universe): https://www.youtube.com/watch?v=-2obDq8xx8w
Studio Ghibli improvised piano medley: https://www.youtube.com/watch?v=tMRRF5yJUMs
Steven Universe Cover (voices, violin, ukulele): https://www.youtube.com/watch?v=bwLjQUkJCqs
Based on the videos I found, I think she took violin lessons approximately age 4-10 & piano lessons 6-16. The rest of the instruments she learned by ear. She can play any song by ear on piano and it's been pretty great getting to live in the same house as her and hear music from my favorite shows & video games :)