Board Thread:Questions and Answers/@comment-175.139.91.75-20130216030327/@comment-5290733-20130216033153

Naturally, the number is uncountable, since there are many small unknown utaite who also have their own songs, but...

I would say from my experience that about 40% of utaite on this wiki have some sort of original song, whether it's composed by themselves or by someone else. When it's composed by someone else and the utaite is simply the original singer, it's called NNI, short for Nico Nico Indies, so if you want to explore original songs, it would be a good idea to look in the NNI tag on NND.

Among the utaite on here it would be difficult to compile a list of original songs, but from looking over the most popular utaite and using ctrl+f to find the word "original" (since we do label original songs as such), here's a short list:

96Neko:
 * "4696 ~ Kuro no Negai ~"
 * "T / M / G ~ Bokura no Kara ~"
 * "Bunpou Shoujo　Φ　Ririka"
 * "Masked bitcH"
 * "Kagen no Tsuki"
 * "Srit the Wrist"

nano:
 * "EMPTY SHELL"
 * "Magenta"
 * "Now or Never"
 * "No pain, No game"
 * "Nevereverland"

Hanatan:
 * "Hana no Uta"
 * "Naiteru Juu"

himawari:
 * "Sora ni Tsuku"
 * "Hanataba" (commu only)
 * "Last Hello"
 * "Biera"
 * "Cross Road*brillant place"

Soraru:
 * "Limit"
 * "Kimi no Me wo"
 * "Kimi Izonshou"

clear:
 * "Kage no Koku" {nnd|sm6673185}}

Sekihan:
 * "Ningen no Tsubomi"
 * "Minarai Hades"

Dasoku:
 * "Lucky Funky"

＿＿ (Underbar):
 * "Moyashi Otoko"
 * "Moyashi Onna"

Don't forget that this list is super incomplete.

Also, I'm guessing you're the one who asked about Gero's RAINBOW GIRL original PV. I would suggest getting an account if you want to be more involved or just to learn more about utaite ^-^