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The Beatles were an English rock band formed in Liverpool in 1960. With a line-up comprising John Lennon, Paul McCartney, George Harrison and Ringo Starr, they are regarded as the most influential band of all time.The group were integral to the evolution of pop music into an art form and to the development of the counterculture of the 1960s.Their sound, rooted in skiffle, beat and 1950s rock and roll, incorporated elements of classical music and traditional pop in innovative ways. In later years they experimented with unconventional recording techniques and additional music styles, ranging from pop ballads and Indian music to psychedelia and hard rock. As they continued to draw influences from a variety of cultural sources, their musical and lyrical sophistication grew, and they came to be seen as embodying the era's socio-cultural movements.

ABBA (Swedish pronunciation: [²abːa]) are a Swedish pop group formed in Stockholm in 1972 by Agnetha Fältskog, Björn Ulvaeus, Benny Andersson and Anni-Frid Lyngstad. The group's name is an acronym of the first letters of their first names. They became one of the most commercially successful acts in the history of popular music, topping the charts worldwide from 1974 to 1982. ABBA won the Eurovision Song Contest 1974 at The Dome in Brighton, UK, giving Sweden its first triumph in the contest. They are the most successful group to have taken part in the competition.

Göran Bror Benny Andersson (Swedish pronunciation: [ˈbɛnːʏ ²anːdɛˌʂɔn] (About this soundlisten); born 16 December 1946) is a Swedish musician, composer, producer, member of the Swedish music group ABBA, and co-composer of the musicals Chess, Kristina från Duvemåla, and Mamma Mia!. For the 2008 film version of Mamma Mia! and its 2018 sequel, Mamma Mia! Here We Go Again, he worked also as an executive producer. Since 2001, he has been active with his own band Benny Anderssons orkester.

Princess Anni-Frid Synni of Reuss, Countess of Plauen (née Lyngstad;[a] born 15 November 1945), better known by her nickname Frida, is a Norwegian-Swedish singer, songwriter, and environmentalist. She is best known as one of the founding members and lead singers of the Swedish pop band ABBA.

Åse Agneta Fältskog (born 5 April 1950), better known as Agnetha Fältskog (Swedish pronunciation: [aŋ²neːta ²fɛltskuːɡ] (About this soundlisten)), is a Swedish singer, songwriter, musician and actress. She achieved success in Sweden after the release of her debut album Agnetha Fältskog in 1968, and reached international stardom as a member of the pop group ABBA, which has sold over 380 million albums and singles worldwide, making them one of the best-selling music artists in history.

Björn Kristian Ulvaeus (credited as Björn Ulvæus [bjœːɳ ɵlˈveːɵs]; born 25 April 1945) is a Swedish songwriter, producer, a member of the Swedish musical group ABBA, and co-composer of the musicals Chess, Kristina från Duvemåla, and Mamma Mia!. He co-produced the film Mamma Mia! with fellow ABBA member and close friend Benny Andersson.

Dolly Rebecca Parton (born January 19, 1946) is an American singer, songwriter, multi-instrumentalist, record producer, actress, author, businesswoman, and humanitarian, known primarily for her work in country music. After achieving success as a songwriter for others, Parton made her album debut in 1967 with Hello, I'm Dolly. With steady success during the remainder of the 1960s (both as a solo artist and with a series of duet albums with Porter Wagoner), her sales and chart peak came during the 1970s and continued into the 1980s. Parton's albums in the 1990s sold less well, but she achieved commercial success again in the new millennium and has released albums on various independent labels since 2000, including her own label, Dolly Records.

Whitney Elizabeth Houston (August 9, 1963 – February 11, 2012) was an American singer and actress. She was cited as the most awarded female artist of all time by Guinness World Records and remains one of the best-selling music artists of all time with 200 million records sold worldwide. Houston released seven studio albums and two soundtrack albums, all of which have been certified diamond, multi-platinum, platinum, or gold by the Recording Industry Association of America (RIAA).[citation needed] Her crossover appeal on the popular music charts—as well as her prominence on MTV, starting with her video for "How Will I Know"—influenced several African-American women artists who followed in her footsteps.

Jacky Cheung Hok-yau (born 10 July 1961) is a Hong Kong singer, songwriter and actor. With more than 25 million records sold as of 2003, he is regarded as one of the "Four Heavenly Kings" and has been deemed the "God of Songs" of Hong Kong

Michael Learns to Rock (also known as MLTR and under their Danny Phantom alias Dumpty Humpty) is a Danish Soft Rock, Pop Rock band, composed of Jascha Richter, Mikkel Lentz, Kåre Wanscher, and Søren Madsen. The band was formed in 1988 and have sold over 11 million records over the course of their career, with the majority sold in Europe & Asia. Despite being Danish, the band performs songs in English, due to their failed attempts of fame in the United States. The band has attributed its success in Asia to their drugs-free, clean-living image and to singing in English as a second language. MLTR has earned Gold and Platinum status for records in many countries and won so many awards, including the Gold Preis Award from RSH, Germany and "The Best Performing Act of the Year" at the SEA Grammy Awards in Singapore. In addition, their song "Take Me To Your Heart" was awarded "most downloaded single of the year 2006" had 6 million or more paid downloads. The band has recorded nine studio albums as well as a number of live and greatest hits albums. Their latest studio album, Still, was released on 21 March 2018. During the peak of their popularity in the late-1990s and early-2000s, MLTR was described by critics as being "as good (if not better) a band as any current big name group out of America or the UK." According to the band's record label releases, their sound is "the perfect balance of a Scandinavian glow and the international pop song that has been instrumental in forming the compelling sound of the band", although the lead singer and songwriter, Jascha Richter, disagrees with this, maintaining that the music defies geographical categorization.