She actually started writing when she was just 5-years-old!

You've no doubt heard her hit song Issues on 106.9 KROC, plus she just released a new single Uh Huh... but did you know you've probably heard her other music on our airwaves before too?

It's true. Even before she broke onto the scene with Issues, she had already written several hits for Selena Gomez, Nick Jonas, Justin Bieber, and Hailee Steinfeld among many others.

Here are the top 15 songs Julia Michaels has written, and you probably know every single one of the them:

You can check out the complete list of all the hits she's written for other artists HERE.

Here she is telling her secret on coming up with all that music in an interview with Ryan Seacrest:

I can't believe she's only 23-years-old and has written that many songs... that's incredible if you think about it.

Which one of her songs that she's written in your favorite?

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