Mysterious underground electronic artist Clive Tanaka has sued Nicki Minaj for copyright infringement, claiming that her mega-hit "Starships" ripped off his song "Neu Chicago", according to the Chicago Tribune.

Filed yesterday in a U.S. District Court in Chicago, the suit also names RedOne, who produced the track, as well as co-writers Carl Falk, Wayne Hector, and Rami Yacoub. Tanaka claims that Minaj's team would have likely been aware of the track, since it had been used in multiple TV ads in Sweden, and had hundreds of thousands of online plays. Neither Minaj nor Red One have commented.

Last year, Tanaka posted to his Soundcloud account a track called "Neu starships?", in which "Neu Chicago" plays in the right channel and "Starships" in the left.

Tanaka is a shadowy figure whose real name and place of origin are unknown. According to the Tribune, his own lawyer describes him as "reclusive" and says he does not to know much about Tanaka's current whereabouts ("Argentina, from what I was told.") Press releases for his album Jet Set Siempre No. 1 claim he's from Japan. The suit says he is a U.S. citizen, and lists his address as being in Chicago.

"Neu Chicago":

And here's "Starships":