Halil Koçak was born on April 12, 1983 in Adana. After completing his primary and secondary education in Ankara, he spent his high school years in Adana and then graduated from Yeditepe University, Department of Architecture in Istanbul. His father is former member of parliament and minister of state Ersin Koçak, and his mother is a housewife.
He started his music career in 2005 by taking part in Sezen Aksu's album and composing the song "Ikili Delilik". During this period, he also wrote songs for important names such as Gülşen, Murat Boz, Bengü, Özcan Deniz, Sibel Can, Levent Yüksel, Zeynep Dizdar and Emel Müftüoğlu; He composed songs such as "Love at Home" and "Canın Sağolsun" for Gülşen, "Tactical" for Bengü, and "Üzüleceksin" for Murat Boz.
The name of her first album was planned to be "Ana Kuzusu", but because Ajda Pekkan liked the song "Nikah" very much and wanted to make a duet with Koçak, the name of the album was changed to "Kibar İsyan" and the release date was postponed to May 5, 2009. The album was released under the Erol Köse Production label; Murat Yeter was the musical director and all arrangements were recorded acoustically with live instruments in the studio of the Ozan-Kenan Doğulu brothers.
The video clip for "Doğudan Doğanım" from the album was shot in the streets of Haliç and Karaköy under the direction of Gürcan Keltek, and the song reached the highest number 7 on the Billboard Turkish Top20. Then, the duet song "Nikah", which he sang with Ajda Pekkan, was frequently played on the radio and reached the highest number 14 on the charts.
Koçak, who has two albums named "Kibar İsyan" (2009) and "Nerde Kaldın" (2012), also sang the duet called "Nikah" with Ajda Pekkan and released the music video of her song "Doğudan Doğanım".
