Battle of the Bands is the first time a musical "mashup" game has been delivered on Wii, allowing players to battle it out with their preferred musical style. Band Mashups features both an exciting two player versus mode and an extensive single-player campaign where players take on the role of one of eleven bands trying to topple the nefarious big boss Mr. Hong and take control of the faraway city of New Cadenza. Battle of the Bands introduces the innovative concept of "music switching," putting the player winning the battle in control of the style of music both players hear.