Pop group Milli Vanilli are stripped of their Grammy Award because the duo did not sing at all on the Girl You Know It's True album. Session musicians had provided all the vocals.

All or Nothing is the debut studio album by dance pop duo Milli Vanilli, released only in Europe on the Hansa label in November 1988. In 1989, it was repackaged and retitled Girl You Know It's True for release in the United States on the Arista label, with several of the original album tracks replaced and/or remixed. After 1990, due to lip-synching allegations, a disclaimer sticker was added on the cover to explicitly name the singers who provided vocals on the album.

Although All or Nothing was replaced in America with Girl You Know It's True, All or Nothing is available on the American iTunes Store.

In December 1990, singer-songwriter David Clayton-Thomas sued Milli Vanilli for copyright infringement, alleging that the title track used the melody from his 1968 composition "Spinning Wheel", a hit for his group Blood, Sweat & Tears.All or Nothing was included in Q magazine's 2006 list of the 50 worst albums ever made.

Pop is a genre of popular music that originated in its modern form during the mid-1950s in the United States and the United Kingdom. The terms popular music and pop music are often used interchangeably, although the former describes all music that is popular and includes many disparate styles. During the 1950s and 1960s, pop music encompassed rock and roll and the youth-oriented styles it influenced. Rock and pop music remained roughly synonymous until the late 1960s, after which pop became associated with music that was more commercial, ephemeral, and accessible.

Although much of the music that appears on record charts is seen as pop music, the genre is distinguished from chart music. Identifying factors usually include repeated choruses and hooks, short to medium-length songs written in a basic format (often the verse-chorus structure), and rhythms or tempos that can be easily danced to. Much pop music also borrows elements from other styles such as rock, urban, dance, Latin, and country.