By Mandi Bierly
Updated May 01, 2012 at 09:34 PM EDT
Jeffrey Neira/CBS

The Late Show

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Carrie Underwood’s new album Blown Away is out today, and to celebrate, she performed a mini concert last night for the Live on Letterman webcast.

What we learned: Even though she still has music’s best legs, she’s worried she’s not quite in tour shape yet. She said she was losing her breath after one number, but we assume that’s just be because she was plowing through a set list she kept purposefully upbeat (save for one ballad, “Jesus Take the Wheel”) and even her fast songs require ample belting.

She played several songs off the new record, including the fiddle footstomper “Cupid’s Got a Shotgun,” which she admitted her husband, hockey star Mike Fisher, questioned the first time she let him listen to it. (She concedes that it’s a little out of character.)

She also said she had to pull out every hunting reference she’d ever heard Fisher make while writing the song: “I’m like, ‘Remington? I think that’s a gun. Yeah. Yeah, yeah, let’s say that. Kevlar? What is that? I know that’s something, something important,'” she told the crowd. “But the other writers had to teach me what the word ‘barrage’ meant. I was like, ‘What is that? Is that a word? You guys are making crap up, trying to stick it in a song.’ But I learned something new, so that was fun.”

Watch her perform the song on Live on Letterman below. And props to her guitarist Shawn Tubbs — subbing in for Brad Paisley, who handles the guitar solo on album.

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