ARMS OST is composed by Atsuko Asahi, and Yasuaki Iwata. ARMS OST combines the creative styles from Mario Kart 8 and Zelda Breath of the Wild into a fresh new composition. With songs like Grand Prix, and Sky Arena, this OST Review is one you may want to check out. This soundtrack has helped me take a better look at the game itself. It furthers my belief Video Game OSTs are very important, and should not be an after thought.