A Star is Born is definitely a film known for its amazing music.
When Bradley Cooper and Lady Gaga were filming the movie they were actually performing their songs to real crowds. A lot of the time, Gaga even invited her fans to come along and be a part of the crowds.
A newly released behind the scenes video shows Gaga talking with her fans and then she starts to sing her hit song 'Bad Romance' for them.
The singer has always had a strong relationship with her fans and this video just goes to prove why!