Big Bang (Korean: 빅뱅) is a South Korean boy band formed by YG Entertainment. Consisting of members G-Dragon, T.O.P, Taeyang, Daesung, and Seungri, the group officially debuted on August 19, 2006. Despite initial lukewarm receptions, their breakthrough came with the extended play, Always (2007), which yielded the number one song "Lies" (Korean: 거짓말; Revised Romanization: Geojitmal). The song went on to top major Korean music charts for a record-breaking seven consecutive weeks, and won the group the Song of the Year award at the 9th Mnet Korean Music Festival.
Big Bang's follow-up releases furthered their success and popularity: Hot Issue (2007) spawned the chart-topping song "Last Farewell," (Korean: 마지막 인사; Revised Romanization: Majimak Insa), while Stand Up (2008) produced "Day by Day" (Korean: 하루하루, Revised Romanization: Haru Haru). After receiving the Artist of the Year award from the 2008 Mnet Korean Music Festival, the group expanded their endeavors to Japan, releasing both their second Korean studio-album, Remember, and their first Japanese album, Number 1, in the same year, and consequently winning three awards at the 9th MTV Video Music Awards Japan. They would go on to release three more Japanese studio albums: Big Bang (2009), Big Bang 2 (2011), and the Japanese-language edition of Alive (2012). Amidst their Japanese promotions, the members branched out to do solo activities: Taeyang and G-Dragon released solo albums, G-Dragon and T.O.P formed a sub-unit, Seungri and Daesung acted in musicals and hosted variety shows, and T.O.P went on to star in various films and television shows.
After a two-year hiatus in South Korea, Big Bang reunited in 2011 with their EP Tonight (2011). Promotions were cut short when multiple members encountered legal issues. By the end of the year, Big Bang emerged as the inaugural Best Worldwide Act winner at the 2011 MTV Europe Music Awards. Three months after their win in Europe, Big Bang released their most successful physical album, the Korean EP Alive (2012), which won them their second Artist of the Year Award at the 14th Mnet Asian Music Awards. Alive became the first Korean album to chart on the Billboard 200, with the group embarking on their first ever world tour that concluded in early 2013. In 2015, after a three-year hiatus, Big Bang made their highly anticipated comeback in their native country with the release of four singles, "M", "A", "D", and "E", to precede their third Korean studio album, Made, released in 2016. The album was met with critical and commercial success, netting in sales of over 30 million records throughout Asia and winning the group their third Artist of the Year Award at the 17th Mnet Asian Music Awards. The group commenced their second world tour, that gathered 1.5 million attendance, making it the largest tour by any Korean act.
Labeled as the "Kings of K-pop" and "Nation's Boy Band," the members’ involvement in composing and producing their own music, most notably G-Dragon, has earned the group respect and praise from the music industry. Including the members' solo releases and sub-units, Big Bang have sold over 140 million records, with over 128 million singles and 13 million albums in Korea, Japan and China, making them the best-selling digital group of all-time in Asia and one of the best-selling boy bands in the world. They have won numerous awards and set several records, including being the act who spent the most months at number one on the Gaon Chart and the most weeks at number one on Melon, besides being the all-time best-selling artist in Cyworld. Big Bang was the first Korean artist to enter Forbes Magazine's Celebrity 100 and the 30 under 30 most influential musicians in the world lists. Citing their global popularity and contribution to K-pop, The Washington Post have described them as "the biggest band in Asia" and the Hollywood Reporter as "the biggest boy band in the world."