"each of the five members [of Big Bang] has his own individual look, and their musical range is equally eclectic, covering R&B, hip-hop, house, electro and pop." Producer and rapper Cho PD expressed appreciation for the group, stating how "[i]dol singers like Big Bang possess the ability of being musicians." He was particularly fond of G-Dragon, describing how "in many ways Big Bang has evolved out of being an idol with the abilities they possess as musicians," noting how "G-Dragon can be counted as the main representative for this.". During the early days of their career, Big Bang's music was predominately hip hop and hip pop, although they incorporated R&B songs into their albums as well. A writer for Yahoo! Japan once compared their early materials to that of American hip-hop artists such as The Black Eyed Peas, stating that their material included "catchy vocals, rap and characters". Always was noted for its change of musical styles from their previous efforts, with the group experimenting with EDM and setting it as the new music trend in Korea. G-Dragon later stated that they hoped "to reach even more fans" with the new direction. In 2008, they recorded "Oh My Friend", a rock-based song, with the Korean rock-band No Brain. In an interview, the group also expressed interests in covering the music genre trot. Alive (2012) was noted for being more "experimental" than their previous materials,[99] with "Bad Boy" described as "nostalgic." The album was also praised for showcasing the group's voice instead of their usual autotune, being described as having "a mature kind of intensity."
Members of the band have branched out to other styles for solo projects, thus the group has been described as "rich in variety" for their fans. Taeyang's EP, Hot, was mainly a collection of R&B songs, with the singer stating that the genre was his "main focus". Daesung's first digital single, "Look at Me, GwiSoon" (Korean: 날 봐, 귀순), was a trot song, which drew criticisms due to Big Bang's image as "hip-hop artists". For his debut album, Heartbreaker, G-Dragon incorporated a mix of dance, hip-hop, and R&B songs. Justin Mccurry from The Guardian said that . The group is known for maintaining tight control over their career and heavily involving themselves in the production of their music, as opposed to other Korean artists. Following the release of Always, G-Dragon began involving himself with the production of the group's materials, penning lyrics and composing songs, such as "Lies", "Last Farewell", and "Day by Day". His involvement was praised by the Korea Times, who described him as a "genius singer-songwriter". G-Dragon himself described the group as "an idol group not born of talent but through effort".[108] A writer for Yahoo! Japan complimented the group for their involvement in their work, stating that "perhaps by [each of the members'] contributing to their own materials, not only do they become in sync with one another, but each person's personality stands out."