Disney's Mulan is a very good movie. The music is also great for highlighting a dilemma that has faced every cosplayer.
Maul Cosplay has taken Mulan's "I'll Make A Man Out Of You" into a parody cosplayers know too well: finishing your outfit the night before a convention. Maul Cosplay has already done some cracking Khal Drogo, Snake and Geralt cosplays, and you'll see them throughout the course of this video.
But above all else, it's just a neat Mulan cover.