Shawn Mendes Performs “Mercy” On Ellen: Watch

Shawn Mendes performed Illuminate cut "Mercy" on Ellen.

The 18-year-old pop star was recently nominated for Best Male Artist, Best Fan Army & Best Cover at the upcoming iHeartRadio Awards, but before he can hop on stage to collect his inevitable accolade, the "Treat You Better" swung by Ellen to sing his latest release.

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