Billie Eilish has released exclusive acoustic tracks as part of Amazon Music's Songline series. These include "Birds of a Feather," "Skinny," "Wildflower," and "L'Amour de Ma Vie." These stripped-down versions of her popular songs reveal the raw emotion and haunting quality of her voice, offering fans a unique and intimate listening experience. The acoustic renditions highlight Eilish's incredible talent and provide a fresh take on her music, making them a must-listen for fans and newcomers alike.