Bruno Mars owes a debt of gratitude to ROSÉ for letting him perform “APT.” with her at a recent BLACKPINK tour stop. In a post about the performance on Instagram, the American singer-songwriter thanked his duet partner and joked that the stint had helped him pay off his long-rumored gambling debts.

Mars joined Rosé onstage at Los Angeles’ SoFi Stadium to showcase the flirtatious track, which sees the pair dueting on vocals and sharing the hooky chorus. The musicians wore coordinating jackets for the performance, which culminated with confetti and a lively dance party from Blackpink’s backup dancers.

Bruno Mars made a surprise appearance at BLACKPINK’s world tour stop in Los Angeles. On July 12th and 13th (local time), BLACKPINK held their “BLACKPINK WORLD TOUR DEADLINE IN LOS ANGELES” at SoFi Stadium.