USA 1st / early pressings do not list Michael Jackson as a co-producer on the back cover under the "Produced by Quincy Jones..." credit (example: [r=2911293]). Later pressings add "Co-Produced by Michael Jackson" (examples: [r=3884453] and [r=485002]). Every song of the LP, excluding "The Lady In My Life", either charted in the Billboard Top 100 or was issued as an A-side or B-side on 45 RPM singles. It was released on November 30, 1982 as the follow-up to Jackson's 1979 critically and highly commercially successful "[m=435524]" LP. "Thriller" explores similar genres to those that were heard on "Off the Wall" but redefined pop music, R&B, rock, post-disco, funk, and even adult contemporary music. It currently remains the largest grossing LP and represents the most copies ever sold of one LP worldwide, with sales over 65 million copies according to various sources. Recording sessions took place between April and November 1982 at [l=Westlake Studios] in Los Angeles, California, with a production budget of $750,000, assisted by producer [a=Quincy Jones].