"He's Misstra Know-It-All" is a UK hit single by Stevie Wonder for the Tamla (Motown) label, from his Innervisions album, which reached #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".