Question: What hit song, sung by Rihanna was featured on her fifth studio album "Loud" and reached number one on the US Billboard Hot 100?
Sentence (from "Traci Hale"): She began her career as a back up singer for R&B superstars Keith Sweat and Aaliyah before becoming a songwriter for artists including Rihanna, Blu Cantrell, Mýa and Brandy.
Relevant evidence: No