Bittersweet World is the third studio album by singer Ashlee Simpson. She worked on the album with producers Timbaland, Chad Hugo, and Kenna. It has been described by Simpson as a "fun party album" with a "silly and quirky" side and some influence from 1980s music. She describes it as having a more beat-oriented sound than her first two albums, Autobiography and I Am Me, although still retaining some of those albums" guitar-based sound.