Tony Bennett has compared Lady Gaga to Ella Fitzgerald, also known as the “Queen of Jazz.”

Fitzgerald won 13 Grammy Awards over the course of her 59-year recording career. President Ronald Reagan awarded her the National Medal of Arts.

Bennett discussed the documentary The Zen of Bennett, now on DVD, in an interview with CNN.

In the film, Bennett reflects back over his 60 year career.

“Your documentary takes place as you're really recording the second duets album,” correspondent Soledad O'Brien says. “Have you loved doing those duets? I mean, you have one where you're performing with Lady Gaga. We see it in the documentary. What was she like?”

“Extremely talented,” Bennett answers. “She's a beautiful singer. I know how popular she is right now. She plays to 40,000 people a night. But she really has a magnificent voice. I think they're going to find out she's right up there with Ella Fitzgerald. She's a very good singer.”

Of the late Amy Winehouse, Bennett said: “She was an authentic great jazz singer. Of all the contemporary singers I ever met, she was the most talented one. She was a true jazz singer.” (The video is embedded on this page. Visit our video library for more videos.)