He was very famous but at his last times, he couldn't sing very much because of his illness. He passed away because of cancer at 2014. The song called "Ay Yüzlüm" is one of the best-known songs in Turkey. Almost everyone knows that. Also, there is a song called "Vurgunum" from his last album and I really recommend to you to listen this song. For me, it's more touching than Ay Yüzlüm.