Bad is the seventh studio album by American recording artist Michael Jackson. The album was released on August 31, 1987 by Epic Records, nearly five years after Jackson's previous studio album, Thriller, which went on to become the world's best-selling album. Bad itself has sold around 30 million copies worldwide, shipped 8 million units in the United States alone, and has been cited as the fifth best selling album of all time. The album produced five Hot 100 number ones, the first album to do so. Similar to Jackson's previous music material, the album's music features elements of R&B, pop and rock. Bad was recorded during the first half of 1987. The lyrical themes on the record relate to paranoia, romance and self-improvement. Bad is widely regarded as having cemented Jackson's status as one of the most successful artists of the 1980s, as well as enhancing his solo career and being one of the best musical projects of his career.