Sevda Ећengгјler 1 Saat Yeеџil -

A continuous loop of one of her most famous lullabies.

The term in your query might refer to Green Noise , which is a type of background sound similar to white noise but focused on nature-like, mid-range frequencies. These "1 Hour Green Noise" tracks are frequently used alongside lullabies for deep sleep and meditation. Summary of Notable Works Sevda ЕћengГјler 1 Saat YeЕџil

If you are looking for long-duration relaxation or sleep music by Sevda Şengüler, you may be thinking of one of these "1 Saat" (1 Hour) versions from platforms like Apple Music or YouTube : A continuous loop of one of her most famous lullabies