Question: Mikky Ekko (born John Stephen Sudduth), is an American recording artist and record producer from Louisiana, signed to RCA Records, he's best known for being featured on Stay, a 2013 single of Rihanna's, for her seventh studio album, "Unapologetic", released in which year?
Sentence (from "Mikky Ekko"): He is best known for being featured on Rihanna's 2013 single "Stay", which has charted in multiple countries worldwide, becoming Ekko's first-charting material.
Relevant evidence: Yes