If you are talking about Classical Turkish music or Turkish Art
Music its known as Turk Sanat Muzigi ; first of all they have
different special instruments such as Ud , Kanun , etc. and each
classic song has a different makam.
Makam means a concept of melodic creation that determines tonal
relations, tessitura, starting tone, reciting tone, and the
finalis, as well as an overall indication of the melodic contour
and patterns deep meaning and emotion.
These makam's are mainly Nihavent , Hüzzam , Hicazkar , Hicaz
and Uşşak
And the most important thing is lyrics have really deep emotions
inside mostly wistful ; they reflect singers' or audiences'
emotions. When audience listen and sing that songs with a good
singer they feel relaxed cause songs can discharge them.