Question: "Contagious Love" is a song by American singers Bella Thorne and Zendaya, Zendaya's music career began in which year, when she released the single "Swag It Out", followed by the single "Watch Me" (with Bella Thorne); the former was released by an independent record label?
Sentence (from "Contagious Love"): "Contagious Love" is a song by American singers Bella Thorne and Zendaya, and from soundtrack album "".
Relevant evidence: Yes