So it's not surprising that the 44-year-old actor and filmmaker would love to take the stage with his A Star Is Born co-star one more time.
On Thursday's The Ellen DeGeneres Show, Cooper opens up about his and Gaga's song, "Shallow," earning Best Song at the GRAMMYs, and whether the two co-stars would consider touring to promote the soundtrack.
"I mean, no," Cooper says bluntly, with a laugh. "But what I thought would be a cool thing to do, maybe one night, would be like a live reading of the script and sing all the songs as we read the script, like at the Hollywood Bowl or something."
"I actually wasn't nervous, because I worked so hard, and Lady Gaga is so supportive. But it was terrifying," he recalls. "Because I'm not a singer and I didn't sing before this movie, so it was really crazy."
"But it just shows you that if you work really hard, and you're with supportive people, you can do things that you never dreamed possible," he adds.
For more on Cooper and Gaga's epic, history-making Oscars duet, check out the video below: