How does she release so many songs!?

I’m very new to Hatsune Miku and have only listened to a few of her popular songs so far (yes because of Fortnite don’t judge me) and really liking them so far, but I just have a question: how does she release so many songs? She’s already released like over 10 songs just this year from just skimming her page and I’m curious how, thanks!