Derya Uluğ released a popular medley (potpourri) of Turkish pop classics in early 2021, featuring her unique interpretations of nostalgic hits that have shaped the Turkish music scene. The Medley Tracks and Their Origins

This collection, often referred to as her "Efkar Serisi" (Melancholy Series), brings together emotional ballads from legendary Turkish songwriters:

: These songs were written and composed by İlhan Şeşen . Musical Direction and Production

: A classic with lyrics by Aysel Gürel and music composed by Onno Tunç.

The project was a collaborative effort led by Derya Uluğ and her longtime partner and collaborator, Asil Gök , who served as the keyboardist. The live-style recording featured a full orchestra including instruments like the clarinet, saxophone, and ney, giving the covers a rich, authentic "live concert" feel. Significance in Her Career

: Both of these iconic tracks were originally written and composed by Kayahan , often called the "Romantic of Turkish Pop".