"He's Misstra Know-It-All" is a single by Stevie Wonder for the Tamla (Motown) label, from his Innervisions album, which reached number 10 on the UK Singles Chart in May 1974. The song takes the form of a mellow ballad with a steady beat, principally a solo performance with Wonder providing lead vocal, background vocal, piano, drums, handclaps and congas. Ethereal flute-like sounds are provided by his TONTO modular synthesiser. Willie Weeks, on electric bass, is the only other musician. Towards the end of the song the mood changes to a stronger feel, more strident singing and with hand-claps emphasising the beat, half-beat and quarter-beat.
The song was released again in 1977 in both the UK and US as the B-side to "Sir Duke".