"You Can't Judge a Book by the (Its) Cover" by Bo Diddley.
OK, boys and girls, back to the 60s: This Willie Dixon composition was first recorded and released by Bo Diddley in 1962 and was one of Diddley's last hits (#21 R&B, #48 Pop). "Willie Dixon's lyrics use a series of metaphors of all sorts of things you can't (discern) by their appearances before landing on the title phrase". Covered by the early Rolling Stones in '62, by The Yardbirds with Eric Clapton in '63 and by The Fabulous Thunderbirds in '92. Stevie Wonder co-wrote and released a completely different song by the same title in '69. Song? Answer: "You Can't Judge a Book by the (Its) Cover" by Bo Diddley. https://www.youtube.com/watch?v=OkJ9glPmv7c&list=RDOkJ9glPmv7c&start_radio=1