The distinctive sounds of Bulgarian folk singing come from many cultural influences, as a country that was under the rule of the Tartar from central Asia and the Ottoman Turks. Many Asian elements can be heard in the use of modal scales, dissonant harmonies and rhythmical and metrical variety. The diaphonic singing tradition of two voices moving in parallel seconds, sevenths or ninths along with the metallic vocal timbres is preserved in the many arrangements. To western ears, this style of singing seems very strange. The a cappella singing is occasionally accompanied by traditional instruments. On this recording can be heard the flute-like kaval (Pritouritze Planinata), and the fiddle-like gadulka (Brei Yvane). The Bulgarian State Radio and Television Female Vocal Choir is led by Philip Koutev and Krasimir Kyurkchiyski who were the forefathers of the Bulgarian folk movement. From the dissonance of "Pilentze Pee' to the beautiful melody of "Polegnala e Todora" this music is simple and enormously diverse.