Carrie Underwood bundled up her unborn baby and stepped outside to perform two songs with the Edge from U2 on Monday night (Dec. 1). The collaboration was part of the World AIDS Day concert in New York City’s Times Square.

Underwood first performed ‘Change,’ an album cut from her 2010 ‘Play On’ album. After a brief pause she sang an inspiring version of her current single, ‘Something in the Water.’ A thick, black overcoat kept her warm as her blonde hair blew in the chilly New York City night. The event was a way of saying “thanks.”

U2’s Bono helped organize the concert, inviting guests like Underwood, Bruce Springsteen and Kanye West when an injury prevented him from performing himself. It was a night to show appreciation for Americans helping to fight the AIDS epidemic. The concert was the beginning of the end of AIDS, organizers say.

Fans can watch the entire concert here.

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