Mash-ups are pretty awesome. When they're for charity, they're even more awesome.

Cyndi Lauper and Sara Bareiles took two of their most famous hits, "True Colors" and "Brave" and mashed them together for a charitable surprise, "Truly Brave."

TODAY show anchor and cancer survivor, Hoda Kotb is behind this great idea, helping to create the song to raise money for pediatric cancer.

The video includes cancer patients from The Children's Hospital of Philadelphia.

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