"Days of Future Passed" is a 1967 album by the British rock band The Moody Blues. It is notable for being one of the first successful concept albums, blending rock music with orchestral elements. The album features a symphonic orchestra, which enhances its storytelling and emotional depth. The album includes the famous track "Nights in White Satin," which became a significant hit. It explores themes of time, love, and the human experience, with each song contributing to an overarching narrative. "Days of Future Passed" is often regarded as a landmark in the progressive rock genre.