Yesterday was Lady Gaga‘s 25th birthday, and she Tweeted in the morning, “I woke up to chicken and waffles in bed, pink tulips, + little monster bday videos. I love you! I was #bornthisday.” Later in the night, her friends threw her a surprise party at a Mexican restaurant. Apparently, Gaga spent an awful lot of time communing with the restaurant’s mariachi band. “She was onstage for most of the night performing for all her friends,” a source said. “No one knew she was going to go up there and perform with them. I think she just loves to be on stage.” One notable moment—this mariachi version of “Born This Way.” Honestly, I still think the song is kind boring, in addition to sounding a lot like “Express Yourself,” but the mariachi instruments do really add something.