Djiboutian music has Somali and Afar roots, Most Somali songs are pentatonic. That is, they only use five pitches per octave in contrast to a heptatonic (seven note) scale such as the major scale. At first listen, Somali music might be mistaken for the sounds of nearby regions such as Ethiopia, Sudan or the Arabian Peninsula, but it is ultimately recognizable by its own unique tunes and styles. Traditional Afar music resembles the folk music of other parts of the Horn of Africa such as Ethiopia; it also contains elements of Arabic music. The history of Djibouti is recorded in the poetry and songs of its nomadic people, and goes back thousands of years to a time when the peoples of Djibouti traded hides and skins for the perfumes and spices of ancient Egypt, India and China. Afar oral literature is also quite musical. Popular Djiboutian musicians include Nima Djama, Abdo Xamar Qoodh, Mohamed Ali Fourchette, Abdallah Lee, Said Xamar Qoodh and Xabiiba Cabdilaahi.