Lady Gaga unexpectedly dropped in at a Los Angeles lounge to deliver some jazz vocals Thursday night (March 14).
The unexpected performance happened at the magic-themed Black Rabbit Rose in Hollywood as part of Fred Durst's Thursday jazz nights at the venue, ET reports.
"I’m here to ruin the party," she joked. "I’m so sorry."
"My whole life, you know, I’ve been called irresponsible," she said, introducing her first number, "Call Me Irresponsible," recorded by Frank Sinatra in 1963. She then performed "Fly Me to the Moon," also associated with Sinatra, who featured it on one of his albums in 1964.
Both songs were part of her recent Jazz & Piano show during her Las Vegas residency.
Watch her surprise set below.