Barney Sumner, born on January 4, 1956, is an influential English musician known primarily as the guitarist and co-founder of the post-punk band Joy Division and the electronic band New Order. His work spans genres such as post-punk, synth-pop, and electronic music. Joy Division, formed in 1976, released seminal albums like "Unknown Pleasures" (1979) and "Closer" (1980), which are known for their dark, atmospheric sound and introspective lyrics, significantly shaping the post-punk movement. Following the tragic death of frontman Ian Curtis in 1980, Sumner and his bandmates reformed as New Order, merging post-punk with dance music. New Order's hits, including "Blue Monday" (1983)—the best-selling 12-inch single of all time—and "Bizarre Love Triangle" (1986), showcased innovative use of synthesizers and rhythms, influencing the emergence of electronic dance music. Sumner's impact on music extends beyond his bands, as he has collaborated with various artists and contributed to the development of alternative and electronic genres. His distinctive guitar work and songwriting continue to resonate, making him a pivotal figure in modern music history.