Kendrick Lamar. (Photo: Getty Images) Los Angeles - Kendrick Lamar is being sued over his track I Do This. The 28-year-old rapper is the subject of legal action from Mattie Music Group (MMG), who claim to own the rights to Bill Withers' song Don't You Want To Stay and have accused the star of sampling the piece without permission. And the woman further accused the rapper of using her surname on the extended video version of his track Alright, saying at the start: "Satterthwaite, turn that shit up", and later saying "R.I.P., my diligence is to only write your eulogy".