Top Definition
The type of music that started as a subgenre of trance and is still considered so by many people. Trance fans usually call is happy hardcore. However nightcore fans prefer to not be associated with trance and don't like the idea of naming a "nightcore" as anything else.

Nightcore is characterized by a sped-up melody (sometimes), fast rhythmic beat (usually), and ALWAYS higher than normal pitch. Almost all nightcore music are original songs nightcored (remixed into nightcore) by nightcore fans.

Very popular is a belief that nightcore is a nickname of a person who remixes the songs. In reality anyone who knows how to use a computer can nightcore a song and upload it on Youtube.
"Do you like trance?"
"So why d'you listen to it all the time?"
"I don't!"
"But even right now you're listening to happy hardcore!"
"It's called nightcore!!"
by nightcore_fan June 18, 2010
Photos & Videos
Genre that originated from trance and/or techno, and eventually got a life on its own.

Pure Nightcore: VERY fast beats (sometimes so extremely fast, that you cannot count them), and very high pitch (almost chipmunks). Song usually lasts about 2 to 3 minutes. Often described as "cute".
Example: Kiss me by Schule321

Bass Nightcore: fast beats, the main melody (and voice) are pitched up, but there's very low bass added; so the contrast between very high and very low is created.
Example: Kiss me by GrizzNightcore

Trance Nightcore: fast beats, high pitch, but less signing and more melody; filled with repetition; very often there is only one verse or a sentence that is repeated throughout the song. Usually it lasts at least 5 minutes, often more.
Example: Kiss me by Nightcoremania
It looks like nightcore is getting more and more popular in these days.
by Goodnight_core April 21, 2011
Almost always refers to a song that was initially trance or dubstep, sped up to the point where the lyrics sound like they are being recited by a hurried chipmunk, featuring a strong beat which is is audible but barely discernible. The song is then posted on YouTube, usually giving no credit to its initial creator, accompanied by a visual of an anime girl (or multiple anime girls).
"Back in my day we used to play 45RPM records at 78RPM just for shits and giggles, but nobody ever called it nightcore."

"I used to listen to music while I was on speed, but now I quit the speed and just listen to nightcore instead."
by longest johnson November 07, 2012
1) A trance music duo consisting of Thomas S. Nilsen and Steffen Ojala Søderholm, started in 2001

2) A glorified term for one of the laziest forms of remixing: speeding up a song and pitching it up, which takes 30 seconds in Audacity. It comes from people trying to emulate Nightcore's style.
Nightcore is awesome, if you're talking about the music duo. If you're talking about the lazy remixes, then nightcore is trash.
by RandomMusician June 19, 2014
A collection of remixed top 40 pop songs fawned over by 11 year-old females that discovered the internet, anime, and music the night before. The remixes are created by speeding up any given song to 320BPM and kicking up the pitch enough so that Alvin, Theodore, and Simon froth at the mouth. These songs are always accompanied by a lowres JPEG taken from Fanpop of a random anime girl with no connection to the song and uploaded to Youtube under an account name consisting of a nonsensical Japanese word and a collection of numbers placed there in order to warrant the username available.
"nightcore is the most awesome genre on the planet d^u^b"
"Right, and Canada is the most awesome country on the planet."
by Elepant June 17, 2013
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."
"That's called speeding it up or chipmunking, not nightcore"
by Mad Mod April 13, 2015
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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