An aspiring Columbus rap artist has been sentenced to 15 years in prison for using underage girls in his music videos. 24-year-old Eric Chavis pleaded guilty to charges of using 16-year-old and 17-year-old girls who posed nude in videos he sold online and in DVD form. Federal agents arrested Chavis last year during a raid of his Barclay Square apartment. Two alleged co-defendants - 22-year-old Mareekus Davis and 30-year-old Carlton Jackson - are charged with conspiracy for their roles in the case.