Pop star Nicki Minaj's song "Starships" was a huge hit in dance clubs last summer.
A relatively unknown artist named Clive Tanaka says "Starships" is an imitation of his song, "Neu Chicago," which he released online a year earlier.
Tanaka's music has gained praise in the electronic music scene, but he's a bit of a recluse and has never performed live.
Yesterday he filed a copyright infringement suit in U.S. District Court in Chicago against Minaj and several of her collaborators.
The Chicago Tribune broke the story, but was unable to get a comment from Minaj or her representatives.
This segment aired on September 11, 2013.