Lady Gaga, along with other high profile celebrities such as Paul McCartney, John Travolta, Bruce Willis and Martin Scorsese, attended the party for Tony Bennett's 90th birthday on Wednesday. But aside from celebrating with the crooner, the pop star also performed at the event and even sang a duet with Stevie Wonder.

Lady Gaga, who collaborated with Bennett in 2014 for the album Cheek to Cheek, sang a few of her hits at the Rainbow Room in New York City. These included "Bang Bang (My Baby Shot Me Down)," "La Vie En Rose" and a toned-down version of "Bad Romance," Perez Hilton reported.

She was then joined by Wonder who played the piano while they sang "You Are the Sunshine of My Life." They then followed up their performance with Wonder's 1981 single "Happy Birthday."

The performances by Lady Gaga and Wonder certainly made Bennett's 90th birthday celebrations even more special. But, even though the singer is now officially a nonagenarian, it seems he has no plans of retiring from his music career.

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Earlier this week, Bennett revealed that he and Lady Gaga are considering making a follow-up album to Cheek to Cheek due to its commercial success. He noted that they might start working on new material for the upcoming album next year.

"She and I are talking about doing a second album," he told Billboard. "She's busy right now, but at the beginning of next year we'll start doing an album. The first one went way over a million, and it's still selling."

Aside from a new album, Bennett will also release a new memoir titled Just Getting Started on Nov. 15, 2016. According to Billboard, the book is about the entertainer's experiences in the music industry and his relationships with other artists including Frank Sinatra, Charlie Chaplin, Amy Winehouse and Bob Hope.