Cailin Russo is our latest musical obsession. We've had her new song "September Rose" on repeat since it dropped on Friday. We love getting to know emerging artists, and Cailin is definitely one to watch. Her song "September Rose" has a cool, soulful vibe that we can't get enough of. She's appeared in Justin Bieber's music videos for his songs "Confident" and “All That Matters,” but now she's stepping out on her own. Once you listen to her own song, you'll be so glad she did. We are. Now it's time to listen to "September Rose" again!