Diane Warren: Relentless

Before I saw this documentary I had never heard of Diane Warren. She's written songs for artists including Beyoncé, Taylor Swift, Celine Dion, Lady Gaga, Whitney Houston, Britney Spears, Aerosmith, Jennifer Hudson, Gloria Estefan, Tina Turner, Belinda Carlisle, Taylor Dayne, Gwen Stefani, Toni Braxton, Michael Bolton, and Mariah Carey. Fascinating!!!