A never-before-seen video of Lady Gaga's performance of 'Lush Life,' a Billy Strayhorn classic surfaced online. The professional-recorded performance was taped during the promotion for her duet jazz album with Tony Bennett back in 2014 at the Grand Place of Brussels in Belgium.

The footage was planned to be a part of a documentary film about the album, but the project was later scrapped.

This performance was going to be confirmed the next day that it would be part of a promotional documentary, which was scheduled to premiere in early 2015 by Barco Escape, a large technology company that planned an impressive 270-degree panoramic cinema, but Barco's negotiations with an internationally known company did not come to fruition and therefore it suspended operations immediately.

The documentary, which was going to be named "Lush Life," exists in its entirety, although it was canceled. In it, we would see performances of songs like "Anything Goes" (available on VEVO), "I Can't Give You Anything But Love", "Bewitched, Bothered and Bewildered", among others.