The lyrics describe deep longing and love, using the metaphor "Yokluğun katran kara" (Your absence is pitch black/tar black).
This response uses data provided by Google's Knowledge Graph Deniz Toprak - Katran lyrics - Musixmatch Deniz Toprak Katran
You may be looking for a paper co-authored by and Zeynep Yegin Katran . They have recently collaborated on medical research published in journals like Allergologia et Immunopathologia : The lyrics describe deep longing and love, using
İlkim Deniz Toprak (Investigation/Data Curation) and Z. Y. Katran (Citing related work on antituberculosis drug-induced hypersensitivity). 2. Music and Lyrics Deniz Toprak Katran