https://www.cnet.com/news/new-smash-bros-ultimate-trailer-is-now-an-amazing-musical-meme/

Whether or not this was intentional on Nintendo's behalf, leaving the backing track out of the trailer has sparked a movement where budding, clever Smash fans create their own versions of the trailer using tracks such as Queen's "Don't Stop Me Now", music from Infinity War and, of course, the DK Rap. We asked Nintendo if this was their intent, but are yet to receive a reply. 

It's surprising how well the trailer matches up with a whole range of pop and rock and hip hop tracks -- as well as music from the original games. But don't just take my word for it, here are some of the fan-made trailers that work incredibly well.