Mike’s Favorite Original Songs of the Decade: #70 – “I Don’t Know What Love Is,” from A Star Is Born

70. “I Don’t Know What Love Is,” from A Star Is Born

More Star Is Born. This soundtrack just produces amazing song after amazing song. This one is just a beautiful duet between Bradley Cooper and Lady Gaga. She pretty much carries the vocals, but he harmonizes with her really well. It’s just a beautiful song, and the only negative thing I can say about it… there’s almost a dozen songs in this movie that are somehow better than this one.