The group Decision, which was founded in 1990, has been the basis of Mor and Ötesi and he has been part of the group for six studio albums and one EP of the band. He was born in 1977 in Ankara. Tekin, who started to study at Istanbul German High School in 1988, together with Kerem Kabadayi, who was his schoolmate , founded the group called Decision, which formed the basis of Mor and Ötesi in 1990. In 1995, Kerem Kabadayi, Deep Brunette and Alper Tekin put together the band Mor and Ötesi . With Mor ve Ötesi, Tekin started to vocalize with the encouragement of Derin Esmer who is also a guitarist / vocalist, and in 1996 he released his first album with the band in 1996. Tekin won the Philosophy Department of Boğaziçi University in October 1996, four months after the release of his album. While he was dealing with music on the one hand and working as a programmer at Open Radio’s Earthquake Communication Center after the 1999 Marmara Earthquake, Tekin successfully graduated from Boğaziçi University in September 2001. Despite his busy schedule, in January 1999, he released his second album, called Birak Zaman Aksın, followed with Gül in 2001, the EP Yaz in 2003 and Dunya Yalan Soyluyor in 2004, which greatly increased the group’s popularity. Following the launch of the Buyuk Dusler in 2006, and the release of the first album, in 2008, the group’s popularity continued to rise abroad, following the 2008 Eurovision Song Contest with the song Deli. Harun Tekin, one of the most successful representatives of oral alternative rock music genre, is interested in mind philosophy and football.