Sia Says She 'Cried in the Dressing Room' Before 'Good Morning America' Performance: 'I Get Really Scared'

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There's a lot of vulnerability behind Sia's wig.

The "Cheap Thrills" singer was on hand for Good Morning America's summer concert series on Friday, but not before revealing how hard it is for her to take the stage.

"I do not love performing," the 40-year-old artist told co-anchor Amy Robach. "I get really scared."

WATCH: Sia Accidentally Shows Her Face During Windy Concert at Red Rocks in Colorado

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Saying she only goes on stage to make people "happy," Sia added, "I just cried in the dressing room... I'm really croaky and I was like, 'I'm not going to hit the high note and I want everyone to like me.'"

Everything about Sia's performances, from her oversized wigs to the intricately choreographed dances and elaborate productions, is meant to draw focus away from herself and toward the music.

You can catch a couple of clips from her summer concert set that GMA tweeted below.

WATCH: Celine Dion Slays Impressions of Cher, Sia, and Rihanna on ‘Tonight Show’

Sia rarely shows her face, but recently, during a windy show at Red Rocks Amphitheater in Morrison, Colorado, the singer's clandestine appearance was momentarily compromised.

Watch the video below for more.

Sia will launch a North American tour for her album, This Is Acting, this fall.