A long history of influences from both Europe and Asia is reflected in the complexity and diversity of Turkish music. Turks are proud of their centuries-old musical tradition, which is similar to the music of nearby Islamic regions such as Saudi Arabia , Iran, and northern India . There is also a lively tradition of folk music, with many regional styles and contributions from ethnic minorities, including the Roma (Gypsies). A cosmopolitan nation, Turkey has also adopted classical and popular music from the West, and developed genres that combine Western, Asian, and Arabic elements. One kind of unaccompanied folk singing is the long melody , consisting of heavily ornamented songs influenced by Islamic chant, sung in free rhythm. The shattered melody style is in strict rhythm and is more suited as an accompaniment dancing. There is also a tradition of balladry and epics accompanied by the " baglama " (a lute; also called a saz ) and performed by itinerant musicians. Folk rhythms are often irregular, in a kind of limping pattern important to the coordination of group dance. Folk instruments include the " zurna ", a double-reed oboe, the " kemence ", a bowed violin, and the " kaval ", an end-blown flute similar to a Bulgarian instrument of the same name. Many of these instruments are capable of producing drones, a musical aesthetic found both in western Asia and in much of the folk music of Europe. Melody instruments include the ney, an end-blown flute; the kanun, a trapezoidal plucked zither; the 'ud, a short-necked lute; the tanbur, a long-necked lute, similar to the folk baglama; and the rebab, a spiked-fiddle. When played in ensemble these are often accompanied by a small drum, called the def, and kettle drums, as well as vocal choruses. Music like this is often used by the Sufi Medlevi cult for sacred ceremonies, often accompanying their famous whirling dervishes . Centuries ago the music of the Ottoman Janissary bands, which is no longer played, greatly impressed Europeans, who incorporated several Turkish instruments, such as the cymbal and kettle drum, into European music. Composers such as Haydn, Mozart, and Beethoven also imitated the music in a style called alla Turca.