Biography
According to Billboard and Bloomberg, sped up nightcore is a remix label used by Warner Music Group (WMG) via the sped up nightcore Spotify account. The origins of the account and its reasons for existing are currently unknown, though one Warner executive has stated that it's to have all remixes under one Spotify profile. It is theorized that the account exists as a way for Warner to capitalize on the sped up song TikTok trend.
Biography text from Last.fm, available under CC BY-SA.