Before she became a world-conquering pop star, Lady Gaga was a regular performer at the Bitter End, an unassuming New York club. And last night, as part of the Bud Light-sponsored “dive bar” tour that took her to Nashville earlier this month, Gaga returned to the Bitter End last night. She played a half-hour show for a crowd of music-business insiders and luminaries that included Robert De Niro, Helen Mirren, and Scott Lapatine. Today’s the day Gaga releases her new country- and rock-influenced album Joanne, and her backing band included Joanne collaborators like Mark Ronson and country songwriter Hillary Lindsey. And when she was done performing, she went up to the roof of the Bitter End and did a couple of surprise acoustic songs for the fans who’d assembled there. She sang “Angel Down” and “Joanne,” the album’s two most campfire-singalong-ready tracks, and the whole crowd sang along even though the album wasn’t out yet. Below, you can watch the whole Bitter End set (it starts around the 12:30 mark) and fan-made singalong of the rooftop performance.

Joanne is out now on Interscope. It’s fun hearing those Euro-accented fans sing along with Gaga’s versions of American country songs.