You can make it rain.

I'm fairly sure you have every single superpower of the most OP Kitchen Witch ever, plus a few side powers too.
You look pretty epic.

The sounds coming from your instrument is just one of many superpowers you've acquired, you're not only immune to many attacks, you're also a virtuoso: an outstanding talent of technical ability of the violin and other fiddles in the string family.

You can adjust the temperature around you so that it’s always a perfect temperature and you’re not melting in the heat or freezing in the cold.

You can make people laugh just by sticking your tongue out in public.

I'm going to say that you can store your fairy magic into baked goods, so that you can use more magic at once by creating magical items for later, replenishing your power, and then nomming on magic treats while casting more spells.
Also, you can transfer the effects that way by casting a spell normally only having an effect on yourself, while you bake something, and then letting someone else eat the result.

You can make flowers bloom at anytime and anywhere

You can instantly turn any water molecules into ice, highly targeted!

You can become invisible

You’re superpower is to control water.