Itsuka no Merry Christmas ~ originally by B'z, but i have ayu's solo cover, ayuxgackt cover, AND namiexgackt cover

White Light - Namie Amuro
Mamoritai~White Wishes - BoA
Winter Bell - Koda Kumi
No way to say - ayumi hamasaki
JEWEL - ayumi hamasaki
momentum - ayumi hamasaki
Days - ayumi hamasaki
Hitotsu - alan
Lovers Again - EXILE
Yuki no Hana - Mika Nakashima