Batı müziğinde iki sesin arası iki eşit parçaya bölünmektedir ve arada kalan ses diyez ya da bemol ifadeleriyle tanımlanır. Ancak Türk Müziğinde iki notanın arası her birine koma ismi verdiğimiz 9 eşit parçaya ayrılmaktadır. 1,4,5 ve 8 komanın özel isimleri ve harfleri(rumuz) vardır. Makamları ortaya çıkaracak olan dörtlü ve beşliler oluşturulurken bu isimler ve harflerden yararlanılır.
london bridge is falling down, falling down, falling down, london bridge is falling down, my fair lady. build it up with wood and clay, wood and clay, wood and clay, build it up with wood and clay, my fair lady. wood and clay will wash away, wash away, wash away, wood and clay will wash away, my fair lady. build it up with bricks and mortar, bricks and mortar, bricks and mortar, build it up with bricks and mortar, my fair lady. bricks and mortar will not stay, will not stay, will not stay, bricks and mortar will not stay, my fair lady. build it up with iron and steel, iron and steel, iron and steel, build it up with iron and steel, my fair lady. iron and steel will bend and bow, bend and bow, bend and bow, iron and steel will bend and bow, my fair lady. build it up with silver and gold, silver and gold, silver and gold, build it up with silver and gold, my fair lady. silver and gold will be stolen away, stolen away, stolen away, silver and g