U.N. Owen Was Her is the extra stage boss theme for Flandre Scarlet in Touhou Koumakyou Embodiment of Scarlet Devil, released in 2002 and composed by ZUN. The title references Agatha Christie's And Then There Were None. Bytebeat is a form of music generated from short C code formulas, popularised online in the early 2010s, producing raw chiptune from maths alone. This version by HypernovaHeathen reworks the famous Touhou melody in that format, and the track circulates among Touhou fans, chiptune listeners and meme editors who reuse classic game themes.