Lyrics: Gotama Saori
Composition: Takada Kyou
Arrangement: Takada Kyou
the question marks because those kanji can be read many ways. "Takada" is definitely the most likely for 高田, but i'm not sure what the most common is for 暁.. could be Satoshi.
edit: D'OH. forgot i could just Google the guy.
Takada Kyou.