Music has played an important role in human history since the earliest civilizations.
Barbra Streisand's album 'Partners' was released, featuring duets with many hugely famous male artists.
The video for Psy's Gangnam Style reached two billion views on YouTube.
Pop singer-songwriter Sia released her hit single 'Chandelier.'
Beyoncé's fifth studio album, 'Beyoncé,' was released.
Metallica became the first band to have performed on all seven continents when they held a concert in Antarctica.
New Zealand singer Lorde released her debut album 'Pure Heroine.'
Selena Gomez's debut studio album 'Stars Dance' was released.
Ariana Grande released her first single, 'The Way.'
Twenty One Pilots released their third studio album called 'Vessel.'
Psy's music video for 'Gangnam Style' surpassed one billion views on YouTube, becoming the first video to do so in the website's history.
Psy's 'Gangnam Style' music video became the most viewed video on YouTube, passing 800 million views.
Singer legend Amy Winehouse was found dead at her home in London, England.
''Somebody That I Used to Know” by Gotye featuring Kimbra was released.
The Australian boy band 5 Seconds of Summer formed.
British singer-songwriter Adele released her hit single 'Rolling in the Deep.'
Taylor Swift's third studio album 'Speak Now' was released. It won Billboard's 2011 Album of the Year.
British boyband One Direction was formed during X-Factor UK.
Eminem released his 7th studio album ''Recovery."
Justin Bieber made his first tweet at 8:27 pm, promoting his single 'One Time.'
Swedish music streaming service Spotify was launched by Daniel Ek and Martin Lorentzon.
After recording for four years, Duffy released her debut studio album ''Rockferry."
The New York Philharmonic Orchestra performed in Pyongyang, North Korea.
Amy Winehouse scored five awards at the 50th Grammy Awards.
Rihanna released her third studio album titled 'Good Girl Gone Bad.'
Jazz composer and musician John Coltrane received the Special Citation Pulitzer Prize after his death.
Rihanna's single 'Umbrella' was released.
American pop singer Ariana Grande joined YouTube at 13 years old.
British singer-songwriter Lily Allen released her first album, 'Alright, Still,' in the UK.
American singer Mario released his hit single 'Let Me Love You.'
Canadian country singer Shania Twain released her Greatest Hits album and later received Billboard's 2004 Album of the Year.
Rockband Green Day released their seventh album, 'American Idiot.'
Mexican singer Thalia the 'Queen of Latin Pop,' was awarded a star on the Hollywood Walk of Fame in Los Angeles.
American singer and civil rights activist Nina Simone died at 70 from breast cancer.
Eminem won four awards for his hit song Without Me at the 19th MTV Music Video Awards.
Eminem released his fourth studio album, 'The Eminem Show.'
Michael Jackson accepted the Artist of the Century award in Los Angeles at the American Music Awards.
The benefit concert 'United We Stand' led by Michael Jackson took place to stand up against terrorism.
Kylie Minogue's signature song 'Can't Get You Out of My Head' was released.
Jennifer Lopez scored her first UK No.1 single with 'Love Don't Cost A Thing.'
The rapper Vanilla Ice was arrested and spent a night in jail after a row with his wife, which led to ripping out her hair.
Eminem's mother sued him after claiming she uses drugs in his hit single 'My Name Is.'
American country singer Toby Keith released his single 'How Do You Like Me Now?!'
Rapper Dr. Dre released his second album, 'The Chronic 2001.'
Italian opera singer Andrea Bocelli released his sixth album, 'Sacred Arias,' which sold over 5 million copies, making it the highest-selling classical album ever by a solo singer.
Woodstock '99 concert took place in Rome, New York, US.
Ricky Martin's 'Livin' La Vida Loca' was released.
Eminem's album The Slim Shady LP went on sale.
Britney Spears's first single, 'Baby One More Time,' was released.
Cher's 'Believe' was released and became the Billboard 1999 Song of the Year.
'No Matter What' by Irish boy band Boyzone was released.
