Turkish classical music is called "Klasik Türk Musikisi" in Turkish. It is a genre on its own under Turkish music. It has the human voice as its basis. The classical music of Turkey is based on a scale. This scale has seven notes and a specific pattern of breaks between each note. This system of notes and breaks is called "makam" in Turkish, which is essential for Turkish classical music. There are different "makamlar" (plural of "makam") and they each have their own set of rules. The scale covers a wide range of musical pitches, because of the wide range of high and low notes. This wide range of high and low notes is referred to as "two and a half octaves" in the music world. Also important is singing. Skilled vocalists, which are called "sanatkar", are known for their ability to give rise to emotions of the lyrics.