Miley Cyrus Performs As Ashley O

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Ashley O made her concert debut at the Glastonbury Festival in the U.K. over the weekend.

The latest alter ego of Miley Cyrus showed up to perform the hit song "On a Roll." Cyrus’ character and the track debuted in the most recent season of Netflix’s Black Mirror and have since taken on a life of its own, with "On a Roll" recently debuting at No. 19 on Billboard’s Pop Digital Song Sales chart.

Miley brought a few surprise guests along with her for her Sunday set at Glastonbury – including Lil Nas X and her father, Billy Ray Cyrus. The rapper and the elder Cyrus joined her for their smash hit "Old Town Road." Lil Nas X sported a Hannah Montana t-shirt to celebrate the occasion, tweeting later that the trip overseas for the festival was "MY FIRST TIME IN ANOTHER COUNTRY!!! INSANE."

Cyrus was also joined by producer Mark Ronson, with who she collaborated on "Nothing Breaks Like A Heart," for a cover of the Amy Winehouse classic "Back to Black." Ronson produced the track back in 2006.