Nico Nico Kouhaku was a live concert streamed in Nico Nico Douga last December 31. Singers included Sekihan, Saiya, Kouhei, Dasoku, Ten, Nero, Noir, Nomiya Ayumi, Puriko, Pokota, Mi-chan, Yamadan, Yuge and Rapbit. Vocaloid producers included HachioujiP, TokuP, T-Pocket and DeadballP. Dancers included Tadanon, Takuma, Mirii, Nyanko, etc.

Someone uploaded parts of the Kouhaku in NND, although I don't know how legit it is and if it will be deleted soon. Anyway, for those who missed it:

Part 1 - Sawagi part 1a

Part 2 - Sawagi part 1b and part 2

Part 3 - Utatte/Odotte part 1 and Sawagi part 3

Part 4 - Utattemita

Part 5 - Golden Bomber

This ranking might surprise you a bit since there are a lot of returnees (familiar ones!), extreme movement within the ranks, an original song, and an utaite who shows her face and shows off her singing/playing prowess :). Enjoy!

PS: I really love the top 3 <33.

↑# - the song moved up from a previous top 30 rank
↓# - song moved down from a previous top 30 rank
↵ - song is a re-entry to the top 30 rankings

I'll be including the weekly top ten and the overall top thirty of the week. Links to the nicovideo are included as well as some information. You may download the .mp3 file by inputting the link @ nicosound. Enjoy!

original Nico Nico Douga Link

NEW UPLOAD RANKING

o1. 【 指切り 】 歌ってみた 【蓮】
• Yubikiri [REN]
• singer's mylist
• Hatsune Miku original by scop
• I love this song so much and while I think REN is not the type to sing this song, he pulled it off well.

o2. 【オリジナル曲】ペリドットとパール【弟の姉】
• Peridot and Pearl [Otouto no Ane]
• singer's mylist
• This is an original song. And it sounds amazing.

o3. 「わんわんお にゃんにゃんお」を歌ってみた by nayuta
• Wanwan o, Nyannyan o [nayuta]
• singer's mylist
• Hatsune Miku original by NekomushiP
• GAH /dies of cute

o4. 「マトリョシカ」 歌ってみた 【tane】
• Matryoshka [tane]
• singer's mylist
• Hatsune Miku and GUMI original by hachi
• Why hello there, tane XD.

o5. 7daysを歌ってみた　by向日葵
• 7 days [Himawari]
• singer's mylist
• Megurine Luka original by Tes.
• Himawari is also a constantly uploading singer and she's getting better and better. I just wish she uses less autotune since her normal voice is very pretty.

o6. 【替え歌】 マッチョヨシコ 【原曲：マトリョシカ】 Ver.ハナゴエ
• [Parody] Macho-yoshika [Hanagoe]
• singer's mylist
• a parody of Matryoshka, a Hatsune Miku and GUMI original by hachi
• ..........

o7. 「深海少女」歌ってみた【terry】
• Shinkai Shoujo [terry]
• singer's mylist
• Hatsune Miku original by YuuyuP
• Not terry's best song, but still pretty nice!

o8. 結ンデ開イテ羅刹ト骸　歌ってみた　染香【オリジナルPV】
• Musunde Hiraite Rasetsu to Mukuro [Senka]
• singer's mylist
• Hatsune Miku original by hachi
• You might remember Senka as the one who sang one of those epic World's End Dancehall covers. This one is pretty cool too. And creepy.

o9. 【新社会人が】Fire◎Flower-Guitar Rock edition-【6回目】
• Fire◎Flower-Guitar Rock edition- [Shin Shakaijin]
• singer's mylist
• Kagamine Len original by halyosy
• I think I'm loving Shin Shakaijin more and more. His range is improving.

1o. color ver.Chibita
• singer's mylist
• Hatsune Miku original by Sorairo Club

( Overall Weekly Ranking under the cut )