此张专辑为Sony BMG为庆祝Michael Jackson于2008年8月29日的50岁生日而在英国发布的英国豪华版，包含曲目为全球歌迷投票产生的。 　　King of Pop is a compilation album by American recording artist Michael Jackson released in commemoration of Michael Jackson's 50th birthday. The album differs significantly in each country it was released because fan voting was employed to determine the songs for each country's version. The album's title comes from the title Jackson acquired approximately 20 years earlier. The album's launch was made public on June 20, 2008 with the official announcement of the Australian version. The first release came with the German edition (which is identical to the Swiss edition) on August 22, 2008. 　　Fans in countries where Sony BMG operates national offices were given the opportunity to vote for songs from a list of Jackson's back catalogue to be included in their country's version of the album. Aside from the tracks selected by fans, a megamix of five songs from the Thriller album by Jason Nevins was also included in the pool. The album has been released in a total of 26 countries. Each pool list and release date differed slightly by country. "Billie Jean" is the only song to appear on all versions of the album. There has been no announcement of a release in North America. 　　On July 18, the United Kingdom version of the compilation was announced, with a release date of August 25. Sony BMG UK teamed up with GMTV and The Sun allowing fans, until August 10, to pick 18 tracks from the song pool. The pool list, at only 50 tracks, is the least diverse; there were no songs included from Jackson's group career. 66,000 people took part in the vote. Despite the pool conducting a possible 18 tracks, only 17 are included. Most notable is the fact that "Scream" is included on the album, as this song had not appeared on any compilation album in the United Kingdom prior due to legal rights with Janet Jackson's label Virgin Records.