Real name: Thomas S. Nilsen & Steffen Ojala Søderholm

The name is derived from Nightcore, a Norwegian duo who released pitch-shifted versions of trance and Eurodance songs, but now more broadly refers to any sped-up cover. Nightcore is also commonly associated with anime, with many YouTube thumbnails of nightcore remixes containing anime characters and art.

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.