<Yearly Karaoke Ranking for 2010> (by song)
1. “Mata Kimi ni Koi Shiteru” – Sakamoto Fuyumi
2. “Kiseki” – GReeeeN
3. “Syunkasyuutou” – Hilcrhyme
4. “Hanamizuki” – Hitoto Yo
5. “Butterfly” – Kimura Kaela
6. “Zankoku na Tenshi no Thesis” – Takahashi Yoko
7. “Futatsu no Kuchibiru” – EXILE
8. “Love Forever” – Kato Miliyah×Shimizu Shota
9. “Ai no Uta” – Koda Kumi
10. “Chiisana Koi no Uta” – MONGOL 800
11. “366 nichi” – HY
12. “Ai no mama de…” – Akimoto Junko
13. “YELL” – Ikimonogakari
14. “Motto…” – Nishino Kana
15. “Mikazuki” – Ayak
16. “Story” – AI
17. “Amagigoe” – Ishikawa Sayuri
18. “Junrenka” – Shonan no Kaze
19. “Lovers Again” – EXILE
20. “Ti Amo” – EXILE
the majority of these songs weren't released this year. Some of them are timeless hits though. None of Ayu's songs made it to top 50...
http://www.dkkaraoke.co.jp/news/press/101201_03.html