To clear up any accusations of AI use.
The Vocals come from the video of Doug Jones (Mac Tonight's suit performer) singing the 60 second cut of the song
The Instrumental is just the originals instruments just hand extended to fit the new section of song. There was no AI extension used for the instrumental.
Please note this video was made before footage/audio of the actual 60 second version was revealed so it was a guess on how the instrumental sounded.
