Human Nature

"Human Nature" achieves its distinctive dreamy quality through deliberate harmonic ambiguity. The verse progression floats between E major and G major without committing to either, avoiding the dominant chord entirely. This creates a hypnotic, unresolved texture that perfectly complements the nocturnal lyrical imagery. The jazz-influenced use of major seventh voicings, smooth voice leading, and a textbook ii–V–I chorus cadence — contributed by Toto's keyboard-driven arrangement — elevates the harmony beyond typical early-80s pop. The song demonstrates how withholding and then delivering harmonic resolution can generate emotional impact far beyond what the individual chords suggest.

Steve Porcaro, keyboardist of Toto, wrote the initial version of "Human Nature" after his first-grade daughter Heather came home crying because a boy had pushed her at school. To comfort her, he told her the boy probably liked her and that "it's human nature." Porcaro recorded a rough demo while Toto's "Africa" was being mixed for single release in October 1982. Fellow Toto keyboardist David Paich added synthesizer strings to the demo. The song was offered to Toto, but they passed, preferring stadium rock material. Producer Quincy Jones discovered the demo by accident — Porcaro had recorded it on a cassette tape, putting David Paich's intended demo songs on the other side. Running low on blank cassettes, Porcaro marked only Paich's side for Jones to listen to. Jones's tape deck auto-reversed after playing Paich's songs, and Jones heard Porcaro's skeletal demo. Captivated by the melody, Jones brought in lyricist John Bettis to rewrite the verses, transforming the lyrics into a portrait of a passerby drawn to New York City nightlife. Bettis completed the new lyrics in two days. The song ultimately replaced the track "Carousel," which had already been recorded for Thriller.

The fifth single from the best-selling album of all time, "Human Nature" is a silky, synth-driven meditation on the allure of New York City nightlife. Written by Toto's Steve Porcaro and lyricist John Bettis, and produced by Quincy Jones, the song became a quiet cornerstone of Thriller and one of Jackson's most covered and sampled tracks.