Yener Çevik aka Sokak Kafası (it is hard to translate but
street smart / street wise is close to Turkish meaning),
he is an old school Turkish Rapper.
i wanted to help him for his graphic design needs
and he asked a logo with Old Turkic script
(also known as variously Göktürk script) from me.
Thanks to Oktay Doğangün for helps to write script.