As yet unrecognized genre of the music that originated on the Internet, more specifically YouTube. Some people claim to be the creator of it, but since the original account is no longer active (and no one even remembers what was the nickname of the person) those claims cannot be proved.

The main characteristic of nightcore is its high pitch often accompanied by fast beat. Very often songs that were remixed into trance, are later on remixed one again into nightcore and so many nightcore songs have trance-like characteristics.

Even though almost any song of any genre can be nightcored, trance and techno songs, as well as electro music and all types of dance music (here especially eurodance) are most often used. Some rock and pop songs are also nightcored. Rap and metal are the two genres that are heavily avoided, and there are very few songs remixed into nightcore.
-Is nightcore the same like trance?
-No, it's not.
by nightcored_heart February 27, 2011
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A subgenre of trance that has been bastardized in recent year by people who think all nightcore is is a sped up or high pitch version of a song with no further work when in actual nightcore you add original music to the song to make it a nightcore song.
"What are you listening to?"
"A nightcore version of some song."
"But all they did was speed it up."
"Ya"
"That's called speeding it up or chipmunking, not nightcore"
by Mad Mod April 13, 2015
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On November 6, 2006 a youtube user nicknamed Cuteangel43802 uploaded the AMV called:
Kingdom Hearts: Dont You: Nightcore

And this became the beginning of the nightcore style. The word “nightcore“ was included in the title, as well as under the video as a “music artist“, rather than “singer“ or “group“, and so it was interpreted to be nickname of the person remixing (i.e. high pitching) the song.

Eventually anyone high-pitching the songs would call themselves nightcore (but to distinguish themselves they would add a word, letter or a number before or after the word), and as the amount of people doing it increased, the meaning transferred to the song genre, rather than the person.

Nightcore can include any genre, because the word itself means “high-pitch“, so it is much broader term than “happy hardcore“ and although some “happy hardcore“ songs can be also called “nightcore“, not all “nightcore“ songs can be called “happy hardcore“.

Wikipedia defines “nightcore“ as a name of a band, but whether there is a connection between the youtube nightcore community and the band is unknown. Possibly the name was directly or indirectly taken from the name of the band, but there is no definite proof for this. It may have been as well a coincidence.
“What genre do you like the most?“
“Hmm... techno trance. How about you?“
Nightcore techno trance.“
“What’s that?“
“It’s just like a techno trance, but high-pitched“
by lily_night March 07, 2011
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The name of a electronica duo from Norway. Nightcore consists of Thomas S. Nilsen and Steffen Ojala Søderholm from Norway, Alta.
Nightcore creates happy hardcore music like Dam Dadi Doo
by just_a_listener February 15, 2012
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Is Japanese slang for, "Faggot weebs"
Japanese man #1 You're a nightcore maker
Japanese man #2 Nani!
by tr yungblood June 06, 2018
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nightcore = trance + techno + high pitch

best nightcore produced by Nightcorikal432 on YT
some ppl just dont no wot nightcore is!!!!!!!
by nightcore_luv333 November 06, 2010
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Nightcore is an awesome music genre which is some sort of trance but sped up and high pitched.
Person 1:Why do you listen to this trance music?
Person 2:It is nightcore!!!
by 456hubf April 07, 2013
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