Nightcore is basically a popular song that is sped up and increased in pitch, they will draw people in with cute anime girls in thumbnails. People will tend to refer to those enjoy this music as "weeaboos"

It originally came from a genre known as "Trance" which is similar to Nightcore, but it is a genre that has longer songs and focus more on the melody.
Nightcore tries not to familiarize itself with Trance.

Nightcore gets a lot of hate at times due to it associating itself with "weeaboos" and being called "Effortless"
Nightcoreis the best music genre.
Nightcore is for weeaboos
Nightcore is effortless
Nightcore is REAL music

I am not good at putting this in a sentence I apologize.
by XepesHasBigGay February 3, 2018
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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 6, 2018
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A made up genre of music in where an original artists music is sped up an pitched up. Often then released on YouTube or similar sharing site with an anime based video as an original piece giving no credit or royalties back to the original artist. Basically an easy way for some non-talented schmuck to ride the back of a real artists work to gain some kind of notoriety for themselves.
"Hey have you heard that new Nightcore song/". "It's not new, some bored a-hole just sped up someone else's song!!!".
by AngryMan1972 March 6, 2019
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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 7, 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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A music genre consisting music sped up, usually paired with higher pitch.
:Guy 1 - Man, This LGBTQ remix is U L T R A - S I C K
:Man - Why are you inside my residence?
:Man - You listen to Nightcore? You musn't've listenend to Gachalife low-IQ retarded-Bullshit?
by Type 99 Arisaka July 30, 2020
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A glorified and shit music genre that is basically plagiarism. It also ruins good songs and it's for weeabos
Person 1: I make music
Person 2: Oh what kind?
Person 1: Nightcore
Person 2: THAT MUSIC GENRE IS SHIT
by violetisawake May 18, 2020
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