You might not be familiar with her name, but Julia Michaels has some impressive writing credits under her belt and she's only 22.

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Julia was born in Davenport in 1993 and ended up growing up in California. She's been singing since the age of 12 and has written music for many popular Top 40 artists including Demi Lovato, Fifth Harmony, Justin Bieber, Kelly Clarkson, Rita Ora, and Selena Gomez.

This Sunday Julia will be performing with Norwegian DJ Kygo at the 2016 Rio Olympics closing ceremony. She will be the only American performing.

Here's the song she'll be singing:

Read more at Bustle.