UNDERWOOD POPS COUNTRY'S BALLOON!

SONGBIRD Carrie Underwood is talking about changing her tune by switching from country to pop — with visions of following Taylor Swift’s footsteps into global superstardom!

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Carrie is fresh off rocking out as the warm-up act for Guns N’ Roses, and sources say her contemplated genre change has country music bigwigs quaking in their boots, fearing they’re going to lose another ginormous cash cow.

Swift, 33, was country music’s top-selling female star when she switched over to pop in 2014 and saw her fame skyrocket.