LOL -lots of laugh-

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in August 2009 by a professional musician named Ken of Hapitora. In February 2010, a dancer group called Danceroid danced to this song and posted the video on the website. Since then, many amateur dancers and performers have danced and posted their videos. All the dancers in the videos wear glasses because Danceroid members wore them in their original video. Below are my favorite videos.

LOL -Lots of laugh- performed by AZ@.TO

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LOL -Lots of laugh- performed by Rw?

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LOL -Lots of laugh- performed by Rinatappo

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Sweet Magic

This song was composed by an amateur music composer Junky and sung by an amateur singer Ron. The video was posted on Nico Nico Douga in April 2011. Within a month, an amateur dancer Satchaso choreographed the song and posted the video. Since then, many amateur dancers and performers have danced and posted their own videos. The song is about cooking sweets while thinking about loved one. Below are my favorite videos.

Sweet Magic performed by Otano Musume

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Sweet Magic performed by Mio

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Sweet Magic performed by Yaeko (Norisuke)

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Sweet Magic performed by Ichi-nen Nijugo-kumi

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Sweetie x 2

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in August 2008 by an amateur music composer Dixie. In November 2011, an amateur dancer duo Makoto and Ume choreographed the song and posted the video on the website. Since then, many amateur dancers and performers have danced and posted their videos. The song was inspired by a true story about a high-school girl who fell in love with a girl in the same class at school. That's why both dancers in the video wear a high-school uniform. Below are my favorite videos.

Sweetie x 2 performed by Nicole (Makoto and Guriko)

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Sweetie x 2 performed by Niini and Saaya

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Sweetie x 2 performed by Kozue and Marisu

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Sweetie x 2 performed by Seventeen

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Happy Synthesizer

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in November 2010 by an amateur music composer (then) named EasyPop. Within a few weeks, an amateur dancer Merochin choreographed the song and posted the video on the website. Since then, many amateur dancers and performers have danced and posted their videos (To see a variety of the videos based on the original song including the ones performed with music instrument, sung by amateur singers, and danced by 3D-modeled characters, watch this edited video). This song became one of the most popular songs on the website to dance to. Below are my favorite videos.

Happy Synthesizer performed by Ikura (Danceloid)

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Happy Synthesizer by Saaya

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Happy Synthesizer by Mirin

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Happy Synthesizer by Shurin

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Melancholic

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in April 2010 by an amateur music composer (then) named Junky. In February 2011, two amateur dance pairs Nicole and Ty-in danced to this song in their own ways at different festivals and the two different choreographies became popular. Since then, many amateur dancers and performers have danced and posted their videos to the website. Below are my favorite ones.

Melancholic performed by Sasa and Rere

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Melancholic by Mariyan
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Melancholic by Wata

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Melancholic by Mirin

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Koiwa Kitto Kyujosho (Love Will Surely Soar)

This song ("Koiwa Kitto Kyujoushou" in Japanese) was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in June 2009 by an amateur music composer named Desumeta. In August 2011, an amateur 3D-CG creator named R.two choreographed the song with a 3D character called Gumi using a free 3D-modeling software called MikuMikuDance (MMD). Since then, many amateur dancers and performers have danced and posted their videos on the website. Below are my favorite ones.

Love Will Surely Soar performed by Yuki and Tomichasu

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Love Will Surely Soar performed by Saaya
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Love Will Surely Soar performed by Ashibuto Penta

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Love Will Surely Soar performed by Konin

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Ochame Kinou (Fukkireta)

This song (the title can be translated as "mischievous function") was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in April 2010 by an amateur music composer named Gojimaji P. The song became very popular after an amateur singer Lon sang the song and posted the video on the website in the next month. Soon an amateur dancer Kiako choreographed the song inspired by another very popular anime-style video titled "Fukkireta" and posted the video. Since then, many amateur dancers and performers have danced and posted their videos on the website. Below are my favorite ones.

Ochame Kinou (Fukkireta) performed by Sasa, Rere, and Pinky

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Ochame Kinou (Fukkireta) performed by Asuka and Kyoka
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Ochame Kinou (Fukkireta) performed by Otano Musume, Ringosu, and Sasa

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Ochame Kinou (Fukkireta) performed by Kozue and Mirin

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Zigg-Zagg

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in October 2009 by an amateur music composer named Junky. In Novebmer 2010, an amateur dancer duo Fine and Tsuruty choreographed the song and posted the video. Since then, many amateur dancers and performers have danced and posted their videos on the website. Below are my favorite ones.

Zigg-Zagg performed by Apricot*

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Zigg-Zagg performed by Rachel
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Zigg-Zagg performed by Meryukke (Meruru and Yukke)

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Zigg-Zagg performed by Ruko


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Gravity=Reality

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in November 2009 by an amateur music composer named Samfree. In December 2009, Minka Lee, who was the member of a professional dance unit Danceroid then, danced to the song in their first DVD. Since then, many amateur dancers and performers have danced and posted their videos on the website. Many performers dance in a maid costume because Minka Lee wore it in the original video. Below are my favorite ones.

Gravity=Reality performed by Wata

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Gravity=Reality performed by Saaya
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Gravity=Reality performed by Konin

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Gravity=Reality performed by Yuki

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Melody Line

This song was composed with a singing synthesizer application software called Vocaloid and posted on Nico Nico Douga in November 2010 by an amateur music composer named SmileR. In August 2011, an amateur dancer group called Asupuni choreographed the song and posted the video on the website. Since then, many amateur dancers and performers have danced and posted the videos. The song was originally choreographed for three dancers. Below are my favorite videos.

Melody Line performed by Norakura

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Melody Line performed by Rw?

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Melody Line performed by M.A.P.

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Melody Line performed by Sasa of Sasa and Rere

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