After his success as the lead guitarist of the first Turkish heavy metal band Pentagram in the early '90s, which garnered enough popularity in Turkey to be heralded as a pioneer of the genre. Two years later, he was accepted to the famed Musician’s Institute in Los Angeles, studying music theory. He joined several bands and, played regular gigs in L.A., further polishing his onstage presence. He went on to writing, arranging, producing and playing guitar for other major singers and bands in Turkey including, but not limited to Sertab Erener, Sebnem Ferah, Sezen Aksu and Model.
In 2000, Demirkan’s career spiked again when record executives offered to record a solo project for Sony. He's been releasing solo albums, EP's and singles under his own record label as well as other labels
Demirkan wrote the hit song "Every Way That I Can" which won him the prestigious Eurovision song contest in 2003 as a songwriter and solidified his rock star status in Turkey. It was Turkey’s first and only win, and it reached No. 1 in Turkey, Sweden, Greece and the top 10 in Belgium, Austria, Spain, and the U.K. Top 75, selling 400,000 copies.
He continues his performer, songwriter and producer careers throughout the world, mainly being based in New York.