Sek began his music career in 2008 under the stage name Seckhofalse, and continued as Sek in 2018. He continued his work in various studios until he established his own studio in 2020, and worked as an MC and creative director in many local music groups. He has released 5 underground albums and many singles online to date. Sek, who describes the foundation of his style as dark trap, does not remain as a rap artist, but produces works that appeal to the general audience on his journey to becoming a musician. Sek, who always has a project to complete on his computer, has also supported his musician circle in graphic design and music video shooting and directing. While he continues his producer identity as Beatbekir in all his works of music production, he continues his work under the name Thunderground, which he founded with Onur Atam in 2020.