Back to Black was released in 2006 as the title track of Amy Winehouse's second studio album, written by Winehouse with producer Mark Ronson and shaped by the end of a turbulent relationship. Its retro soul sound, drawing on 1960s girl groups and Motown, helped the album become a global breakthrough and made the song one of her signature works. Years after her death in 2011, the chorus has lived on in films, covers and social media edits, where its stark story of loss still resonates with new listeners.