It is a perfect choice for you to gain more experience in high school. Interacting with the world of music will be very helpful for discovering strengths, weaknesses, and interests. A solid foundation from high school will play an important role.
Here are some useful things. Let’s have a look:
Find a teacher in the music area and learn important things from him. Having guidance from teachers in a specific area will be very helpful for exploring the new things which you are not aware of.
Learn music theory and ask your teacher some additional resources. Also, you can take help from the internet as well.
Join ensembles - If you are in a band, join a choir. If you are in a choir, try learning an instrument! Perform with ensembles or live music band, your experience counts valuable assets.
Perform as often as possible – Don’t just stick to performing only in ensembles. Explore more opportunities as much as you can. This would be beneficial for your career.