Battle Frontier (バトルフロンティア)

Battle Frontier is the fourth opening theme for Pokémon: Advanced Generation in the Pokémon anime franchise (Pokémon / ポケットモンスター). Performed by Akina Takaya, it was released as a single on May 19, 2004 and used in the television run animated by OLM, Production I.G, and Xebec.

Composed by Shinji Miyazaki with lyrics by Kōhei Tanaka, the song uses a pop-rock style that fits many early-2000s anime themes.