Cin Seddi is a Turkish rock band formed in Ankara in 2003. Their music combines melodic rock with modern alternative influences, often featuring emotional lyrics and atmospheric arrangements. The band released their debut album Her Şeye Evet Diyemem in 2009, which includes notable tracks like "Kumdan Kaleler" and "Her Şeye Evet Diyemem." Fronted by vocalist Özlem Altınışık, Cin Seddi has become known for their unique sound within the Turkish alternative rock scene.