It was the second track on Wonder's Music of My Mind album, and was also released as the first single.

In essence a two-part song, there is a coherence in that it tells a story of the singer's relationship with "Mary".

The second part covers the narrator's wondering why she had not come back as soon as he had hoped.

Besides its floaty ambience, it featured the singer as a virtual one-man band.

[1] Cash Box said of the song "Superwoman, superproduction, supersong, superhit: AM and FM, pop/soul and MOR.