Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Daigasso! Band Brothers DX is a music video game developed and published by Nintendo for the Nintendo DS handheld game console. It is the sequel to Daigasso! Band Brothers, which was released at the DS'' launch. It has only been released in Japan. It uses the largest save capacity for a Nintendo DS game at eight megabytes. Its release was accompanied by a Wii Channel for the Wii console called the "Speaker Channel" that allowed players to hear the game''s sound through their television. It features the character Barbara Bat, who was also in the predecessor. Daigasso! Band Brothers DX features more than 60 instruments that can be played. Its gameplay focuses on button input similar to its predecessor. The buttons used increases as the difficulty increases - while on the lowest difficulty, any of the buttons may be used to hit a note, while the hardest difficulty usually makes use of all buttons. The notes scroll down at a certain speed, and the players must hit a note with the corresponding button. Up to eight players may play together. It also makes use of the microphone for a karaoke mode that allows players to sing to the lyrics of a song using the Nintendo DS'' microphone.