"Say Goodbye" by Future Islands is a poignant and emotive track that captures the band's distinctive synth-pop sound and lead singer Samuel T. Herring's evocative vocal delivery. Featured on their album "As Long as You Are," the song unfolds with a blend of lush synthesizers, driving rhythms, and Herring's soulful crooning. The lyrics delve into themes of parting and the bittersweet nature of farewell, adding a layer of emotional depth to the music. "Say Goodbye" exemplifies Future Islands' ability to craft emotionally resonant and sonically rich compositions that linger in the listener's memory, making it a standout piece within their discography.