Talking Book (1972)
This is the album that many consider the kick-off of Wonder's "classic" period. He came into his own as a musician and producer, and also made several hits out of this album.
Innervisions (1973)
Another classic creation followed up Talking Book. Any true Wonder fan must have this.
Songs in the Key of Life (1976)
The ambitious capstone to Wonder's classic period and a great high point in his career, this album spans a range of styles and shows off Wonder's developed skills.