Watch Lady Gaga Perform Sinatra Songs During Jazz Night at Hollywood Bar

On Thursday night, Lady Gaga dropped in at the Black Rabbit Rose in Hollywood, California to surprise the jazz night crowd with a small set of Frank Sinatra songs.

Gaga joked, “I’m here to ruin the party. I’m so sorry.”

She sang both Sinatra’s “Call Me Irresponsible” as well as the classic “Fly Me To The Moon” with the help of a live band, Entertainment Tonight reports.

As part of Gaga's recent Jazz & Piano show during her Las Vegas residency, she routinely performs both Sinatra songs.

The Black Rabbit Rose has jazz night every Thursday, which is organized by Limp Bizkit’s Fred Durst.

Watch Lady Gaga's surprise set below.

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_{Article image: Lady Gaga at the Toronto International Film Festival in 2017. (Lee Chu [CC BY-SA 2.0] via Wikimedia Commons.)}