DaeSungs Life Story

2006-07: Debut with Big Bang and early works

Although his parents were strongly against the idea of him becoming a singer, Daesung pursued a singing career and was eventually recruited by after auditioning. He later appeared on a reality show which documented the formation of Big Bang with five other trainees: , , , , and So-1 (). Hyunseung was eventually dropped and Big Bang debuted in 2006 with five members. Big Bang made their first appearance as a group on August 19, 2006, at YG Family's 10th Anniversary concert. On September 23, 2006, they had their debut performance on television broadcast.

Big Bang's debut was fairly successful, with their netting in sales of over 40,000 copies. It spawned several airplay titles, including "La La La", "We Belong Together" and "Forever with You" which featured label-mate . Daesung also recorded his first solo song "Try Smiling" (Korean: 웃어본다; Revised Romanization: Useo Bonda) for Big Bang's first album . The group's breakthrough came with the release of their first , (2007), which included the number one song "Lies" (: 거짓말; : Geojitmal). The song went on to top major Korean music charts for a record-breaking seven consecutive weeks, and won the group the award at the . Their following EPs followed its predecessor's footsteps: yielded "Last Farewell" (Korean: 마지막 인사; Revised Romanization: Majimak Insa) while spawned "Day by Day" (Korean: 하루하루; Revised Romanization: Haru Haru); both singles were chart-toppers.[[#cite_note-빅뱅_쥬크���차트_8주_연속_1위_기염,_JOO도_2주만에_7위_진입-15|[15]]]

Shortly after the debut of Big Bang, Daesung was diagnosed with voice chord nodules. For nearly a year, he struggled with his voice and developed sociophobia and stage fright. However, he was able to recover with the help of fellow singer and label-mate , who had been previously diagnosed with the illness, and the two became close because of this situation. Before the release of Big Bang's second album, Daesung's condition improved drastically.[]