Keiki Kobayashi joined NAMCO Sound Team during the development of Ace Combat 04: Shattered Skies, then as an inexperienced musician. His unique perspective of songwriting led to high acclaim for Ace Combat 04's soundtrack, and his standout masterpiece "Agnus Dei - Megalith" led to his promotion as head of the Namco Sound Team and a wide spread fanbase from the Ace Combat Series. He continued as the lead composer in Ace Combat, Tekken and Soul Calibur series.