In Square Circle Songwriting Credits by Stevie Wonder

In Square Circle was written, produced, and largely performed by Stevie Wonder, continuing the self-contained studio approach he had refined since the early 1970s and leaning heavily on the synthesizer textures that defined mid-1980s soul. The lead single "Part-Time Lover" became a crossover landmark, topping the Billboard Hot 100, the R&B, adult contemporary, and dance charts, a feat that made Wonder the first artist to reach number one across all four lists simultaneously. "Overjoyed" emerged as the album's signature ballad, a song Wonder had carried for years before finishing it for this record, and it remains one of his most covered later compositions. "It's Wrong (Apartheid)" closed the album as a direct protest against South African apartheid, tying the record to Wonder's broader activism of the decade.