Coşkun Demir was born on May 9, 1948 in Mürefte village of Şarköy district of Tekirdağ. Since his family had a difficult life after the 1912 Şarköy earthquake, Demir's educational life was also shaped by these difficulties; He completed his primary education in Şarköy and high school at Bursa Boys' High School.
After high school, he enrolled in the Department of Electrical Engineering at Istanbul Technical University, but his university years were also the period in which the foundations of his music career were laid. During this period, he took his first step into the music scene by establishing a group called "Bee Quartet".
Although military service and various business experiences forced him to take a break from his music studies for a while, he consolidated his presence on the stage by finishing first in the Golden Microphone Competition in 1979.
After the competition, he released a 45 from Yavuz Plak, which included Selmi Andak's song "Sevgiye Tutsak", and then turned to joint projects with Ali Kocatepe. “What is Left to Us?” published by Kocatepe's company 1 Number. The record titled was the beginning of the duo's collaboration, and this partnership gradually increased.
Demir, who performed Kocatepe's song "Miras" in the final of the Turkish Eurovision Song Contest in 1981, also took part in the Modern Folk Trio and Ayşegül Aldinç's song "Dönme Dolap" from the same record.
The artist, who released his album "Koca Çınar" in 1982, participated in the Eurovision preselections again a year later and this time sang "Heyamola", a joint work of Ali Kocatepe and Sezen Aksu. "Heyamola" increased Demir's popularity by achieving great sales figures. He participated in the Sopot International Song Contest held in Poland in 1984 and came in fourth place with a Polish song in Turkish.
In the same year, he took part in the musical "Çılgınçılar", staged by Haldun Dormen and starring Nilüfer. In 1986 and 1987, "Who is He?" He released the albums "Paramparça" and "Paramparça".
Demir, who released the album "I Missed You" in 1991, featuring Melih Kibar's compositions, then took the stage in a cabaret show with Müjde Ar and Uğur Yücel and continued this project for about a year. In 1996, Grup G.A.K. He brought contemporary interpretations to popular Turkish music songs by releasing the album "Eski Sevdalar" together with.
A year later, she won first place at the Cairo International Song Competition by performing Selma Çuhacı and Mine Mucur's song "There is Always a Tomorrow".
