"Holy Night" by Sugiyama Kiyotaka: https://www.youtube.com/watch?v=J_P_qv6_Rq4
"Funky Christmas (Long Version)" by Meiko Nakahara: https://www.youtube.com/watch?v=iY4_meKZ9-M
"Christmas Eve" by Yamashita Tatsuro: https://www.youtube.com/watch?v=pYP_1MZyWBM