安室奈美恵 新曲はドラマ「ファーストクラス」主題歌、沢尻エリカと"初"コラボ ["First Class" Drama New Theme Song, Namie Amuro New Song Collaboration] (in Japanese). Musicman-Net. September 26, 2014. Archived from the original on October 6, 2014. Retrieved October 2, 2014.
安室奈美恵 新曲はドラマ「ファーストクラス」主題歌、沢尻エリカと"初"コラボ ["First Class" Drama New Theme Song, Namie Amuro New Song Collaboration] (in Japanese). Musicman-Net. September 26, 2014. Archived from the original on October 6, 2014. Retrieved October 2, 2014.