Canzoni

• cry and smile
• egao
• Grotesque (グロテスク)
• OST Boku no hatsukoi wo kimi ni sasagu
• 瞳をとじて

Ken Hirai

Altri artisti

• Julia Boutros
• Eluveitie
• Mayada El Hennawy
• Natan Goshen
• Frank Reyes
• Freddie Aguilar
• Nana Mizuki
• Mia Martini
• Lavrentis Mahairitsas
• Madalina Manole