WTF?! is Enka?
Here is the real life Killer Bee performing Enka ^_^ The definition is below the video.
(Wikipeida Entry) Modern enka (演歌 — from 演 en performance, entertainment, and 歌 ka song) came into being in the postwar years of the Shōwa period. It was the first style to synthesize the Japanese pentatonic scale with Western harmonies.[clarify]Enka lyrics, as in Portuguese Fado, usually are about the themes of love and loss, loneliness, enduring hardships, and persevering in the face of difficulties, even suicide or death. Enka suggests a more traditional, idealized, or romanticized aspect of Japanese culture and attitudes, comparable to American country and western music.