A staple in any home version of a Capcom fighting game, the training stage lets you practice a character's moves, see attack data, and view your controller inputs, which help you become a better player. The game lists the physical location of the training stage in Osaka, which likely means it's in the same complex as the three other Osaka stages, most likely inside the dojo seen in the background of the stadium stage.
The training stage has an official background theme, titled Real Eyes. In addition to hearing this music while training, the Xbox and GameCube home versions have 13 other music tracks that randomly play, all of which are tracks and remixes from other character's stages in other fighting games from both SNK and Capcom games.
Real Eyes - 1.9MB, 2:05, 128kbps MP3
Theme of Capcom: Street Fighter Remix - 3.0MB, 3:18
Street Fighter 2: Ryu's Stage - 1.6MB, 1:42
Street Fighter 2: M.Bison's Stage - 2.0MB, 2:09
Street Fighter 2: Sagat's Stage - 1.4MB, 1:31
Super Street Fighter 2x: Theme of Akuma Remix - 1.3MB, 1:24
Darkstalkers: Morrigan's Stage - 1.9MB, 2:04
Theme of Final Fight - 1.9MB, 2:04
Theme of SNK: KoF '94 - 2.1MB, 2:17
Mark of the Wolves: Terry's Stage - 1.7MB, 1:52
Mark of the Wolves: Geese's Stage - 2.1MB, 2:20
Mark of the Wolves: Paopao Cafe Stage - 2.3MB, 2:27
Samurai Showdown: Nakoruru's Stage - 2.1MB, 2:16
Art of Fighting: Theme of Sakazaki - 2.1MB, 2:16