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Miley Cyrus performs with Madonna for MTV Tuesday Jan. 28, 2014. The 21-year-old pop star and the 55-year-old Queen of Pop grinded and grabbed each other as they performed Cyrus' hit "We Can't Stop" and Madonna's 2000 track "Don't Tell Me" Tuesday during a taping in Hollywood. The "MTV Unplugged" special that closes with the duet is set to air Wednesday. (AP Photo/Sandy M. Cohen) Image Credit: AP

Miley Cyrus mashes it up with Madonna, twerks with her tongue out and drops a bunch of F-bombs on her upcoming MTV special, and she’s in fine voice while doing it.

While her whittled stomach and occasional crotch-grabs compete for attention, Cyrus really can sing, and it shows on her episode of MTV Unplugged, which aired yesterday in the US.

Cyrus taped the acoustic concert on Tuesday on a Hollywood soundstage, performing stripped-down versions of selected songs from her latest album, Bangerz, and closing with a booty-slapping duet with Madonna.

“So, it sounds super lame, but as a pop star it’s pretty cool performing with Madonna,” the 21-year-old said after singing a mash-up of Madonna’s 2000 track Don’t Tell Me and Cyrus’ hit We Can’t Stop. Cyrus spanks the 55-year-old Queen of Pop during the duet, which made Madonna’s Britney Spears kiss feel like it was way more than 10 years ago. This is Cyrus’ show, and it’s a hoedown. Backed by a seven-piece band on a stage decorated with hay bales, Cyrus gives her acoustic songs a country touch, adding a twang to 4x4 and Bangerz. “I’m from Nashville,” she said. “And since I couldn’t make all of you guys go back home with me, I tried to bring Nashville here for the night.”