This 1976 double album took Wonder two years to complete, but it was the grand slam that cemented Wonder's status as a musical visionary. Songs in the Key of Life is his most balanced synergy of spirituality, romance, and politics. Musically, Wonder combines immediate melodies with more complex orchestration than he had on previous albums. Triumphant horns introduce the euphoric "Sir Duke," while a funky organ melody underpins the Grammy-winning single "I Wish." Meanwhile, simple songs such as "Knocks Me off My Feet" and "Joy Inside My Tears" are as emotionally stunning as grander affairs like the big band celebration "Another Star" and the jazzy "Summer Soft." The reissue also includes four songs that originally accompanied the album on a 45 insert, including "Ebony Eyes," an homage to African-American women, and the sexy, guitar funk classic "All Day Sucker." The significance of this recording to soul music is immeasurable -- Songs in the Key of Life is an incomparable tribute to love, spirit, justice, and the joy of life itself.