WHO IS MARSHMELLO. Well, let's be real…we all kind of know at this point. But let's all ignore that to continue having fun. Marshmello returned to Red Rocks this past weekend to a sold out crowd of all ages. Marshmello has done an incredible job merging in many different genres to dance music, making the sound more accessible than ever before. Young, old, and of course 20-somethings all enjoyed Marshmello throwing down at Red Rocks, but it was his opening that got most people talking.

Will Farrell Shows Up At Red Rocks

Will Farrell has been in on the Marshmello joke before this weekend at Red Rocks, but it doesn't make it any less hilarious when he pops up unexpectedly. He took over the visual screen behind Marshmello to explain to the crowd that he is, in fact, and has been all along, Marshmello.

Fans loved the surprise. Check out the full clip below. If you are still unsure who Marshmello is…in a way, we are all Marshmello but you can always check out the real details here.