Bad was released on August 31, 1987, five years after Thriller. The gap was not accidental. Michael reportedly recorded more than sixty songs for the project and spent the better part of two years narrowing them down with Quincy Jones. Nine of the eleven tracks on the final album carry Michael as sole or primary songwriter — a dramatic shift from Off the Wall, where he wrote three.
The title track sets the tone. Originally conceived as a duet with Prince, who declined, Bad became a solo confrontation piece with a growling synth bass and a vocal full of hiccups, grunts and percussive breath sounds. Those vocal tics are not decoration; they function as part of the rhythm arrangement.
The Way You Make Me Feel is the most straightforwardly joyful thing Michael ever recorded. It is built on a shuffle rather than a straight four-on-the-floor, which is why it swings in a way most late-eighties pop does not. Speed Demon and Another Part of Me keep the album's middle section moving with heavier, more mechanical grooves.
Man in the Mirror is the album's emotional peak and, notably, one of only two tracks Michael did not write — it came from Siedah Garrett and Glen Ballard. The arrangement builds from a near-whisper to the Andraé Crouch Choir, and Michael's final ad-libs were recorded in a single pass. It became the album's fourth number one.
Dirty Diana leans hardest into rock, with Steve Stevens of Billy Idol's band on lead guitar. Smooth Criminal closes the run of singles with the most rhythmically precise track of Michael's career — a heartbeat-tempo pulse under a lyric that reads like a crime scene report.
Bad produced five number-one singles on the Billboard Hot 100, the first album in history to do so. The accompanying Bad World Tour ran 123 concerts across 15 countries and played to roughly 4.4 million people, setting attendance records that stood for years.
The common criticism of Bad is that it sounds more of its moment than Thriller does — the synth patches, the gated drums, and the digital reverb are unmistakably late eighties. That is fair. But it is also the album where Michael takes full authorship of his own material, and the confidence of that shift is audible on every track.
For fans, Bad is often the emotional favourite even when Thriller is the intellectual answer. It is the sound of an artist who has already won everything deciding to prove he can do it on his own terms.