Japanese music video.
It starts out with a waiting room at a talent agency, and the band gets called in. They’re dressed in kind of nerdy clothing and don’t look very hardcore. They get in front of the judges and start the song, and as soon as they start the band suddenly look super edgy and the scene changes to a nightclub.
Unfortunately the person showing the video skipped to the end because she was worried it was too adult so I didn’t get to see most of it. It ended with the band getting the job.