synthesizer#* Buzz Feiten – electric guitar# "I Love Every Little Thing About You" – 3:46#* Stevie Wonder – lead vocal, background vocal, Fender Rhodes, drums, bongos, Moog bass# "Sweet Little Girl" – 4:54#* Stevie Wonder – lead vocal, background vocal, keyboard, Fender Rhodes, harmonica, drums, Moog bass#* Background Singer - Syreeta (uncredited);Side Two# "Happier Than the Morning Sun" – 5:18#* Stevie Wonder – lead vocal, background vocal, Hohner clavinet, Moog bass# "Girl Blue" (Wonder, Yvonne Wright) – 3:36#* Stevie Wonder – lead vocal, Hohner clavinet, drums, talk box, harmonica, Moog bass, T.O.N.T.O.
synthesizer#* Buzzy Feiton – electric guitar# "I Love Every Little Thing About You" – 3:46#* Stevie Wonder – lead vocal, background vocal, Fender Rhodes, drums, bongos, Moog bass# "Sweet Little Girl" – 4:54#* Stevie Wonder – lead vocal, background vocal, keyboard, piano, harmonica, drums, Moog bass# "Happier Than the Morning Sun" – 5:18#* Stevie Wonder – lead vocal, background vocal, Hohner clavinet, Moog bass# "Girl Blue" (Wonder, Yvonne Wright) – 3:36#* Stevie Wonder – lead vocal, Hohner clavinet, drums, talk box, harmonica, Moog bass, T.O.N.T.O.