arranged by, composed by, lead vocals, performer [musician], producer, written-by Stevie Wonder
tracks a4 to b1, d3, d4, e2, f2 bass Nathan Watts
tracks a4 to b1 drums Raymond Pounds
tracks a4, c1, c2, e1 keyboards Greg Phillinganes
tracks a4, a5, b5, e1, f1 lead guitar Michael Sembello
liner notes [spanish translation] Ray Maldonado
liner notes [zulu translation] Thoko Mdalose Hall
tracks a1 to d4 mastered by Jeff Sanders
tracks a4, a5, b4, e1, f1 rhythm guitar Ben Bridges
Recorded At Crystal Sound
Recorded At The Hit Factory
Recorded At Record Plant, Los Angeles
Recorded At Record Plant, Sausalito
Mastered At Crystal Sound
Mastered At Allen Zentz Mastering
Phonographic Copyright (p) Motown Record Corporation
Copyright (c) Motown Record Corporation
Copyright (c) Jobete Music Co., Inc.
Published By Jobete Music Co., Inc.
Published By Black Bull Music, Inc.
Discs have the following auto coupled sides:
LP Disc 1: Side 1 / Side 4
LP Disc 2: Side 2 / Side 3
Collector's album includes two records (2 x LP), a something extra (7, titled 'A Something Extra for Songs In The Key Of Life') and 24-page lyric booklet. All records pressed on black vinyl.

Gatefold sleeve.

Matrix / Runout: 2645-S (Label Side 1)
Matrix / Runout: T13340-C2-2645-S-1A XSX JS･1･XTAL 5Z (Runout Etchings Side 1)
Matrix / Runout: 2646-S (Label Side 2)
Matrix / Runout: T13340-C2-2646-S 1A JS 2･XTAL (Runout Etchings Side 2)
Matrix / Runout: 2647-S (Label Side 3)
Matrix / Runout: T13-340C2-2647-S-10I-14 JS･XTAL T2 (Runout Etchings Side 3)
Matrix / Runout: 2648-S (Label Side 4)
Matrix / Runout: T13-340C2-2648-S-16･H JS･XTAL (Runout Etchings Side 4)
Matrix / Runout: 2649-S (Label Side 1 - 7)
Matrix / Runout: T13-340-2649-S-1A AZ S11 (Runout Etchings Side 1 - 7)
Matrix / Runout: 2650-S (Label Side 2 - 7)
Matrix / Runout: T13-340-26450-S-1A AZ S11 (Runout Etchings Side 2 - 7)
Rights Society: ASCAP
Other: T 340EP (Cat # EP)