A mash-up between two (actually three) remixes of "U.N. Owen Was Her?", Flandre Scarlet's theme from the Extra stage of "Touhou 6: The Land of the Scarlet Devil ~ Embodiment of Scarlet Devil":
=> Terralimite's and Livvy94's accurate-pitch remakes of the original "McRoll", the "Ronald McDonald Insanity" remix of "U.N. Owen Was Her?" made by Mikuru on Nico Nico Douga.
=> Peposoft's cover of "U.N. Owen Was Her?" for the fan-game "Touhou: Luna Nights".

Source of the image for this song: https://www.youtube.com/watch?v=EbjvMXnnwFI

Credits:
=> Jun'ya Ōta, a.k.a. "ZUN", for the original song and the Touhou game series.
=> Mikuru, for the original version of the McRoll [https://www.nicovideo.jp/watch/sm1919148].
=> Terralimite, for the main remake of the McRoll featured in this mash-up [https://www.youtube.com/watch?v=ViGOQeo3Vt0].
=> Livvy94, for the remake of the McRoll featured in the 2nd half of this mash-up [https://soundcloud.com/vince94_memetrash/the-mcroll-except-it-isnt-off-key].
=> Team Ladybug and Vaka Game Magazine / Why So Serious, for developing "Touhou: Luna Nights" (including Peposoft from Team Ladybug, for making Touhou songs' covers for this game's soundtrack).

New tracks tagged #mcroll