The music of Slovakia has been influenced both by the county's native Slovak peoples and the music of neighbouring regions. Whilst there are traces of pre-historic musical instruments, the country has a rich heritage of folk music and mediaeval liturgical music, and from the 18th century onwards, in particular, musical life was influenced by that of Austria-Hungary. In the 19th century, composers such as Ján Levoslav Bella began to write romantic music with a Slovak character. In the twentieth century, there were a number of composers who identified with Slovak culture. After the fall of communism in 1989–90 the country also began to develop its own popular music scene in Western style. History of music in Slovakia The term Slovak music is slightly confusing; many peoples lived over the ages in the territory now represented by the state of Slovakia, and the history of the region's music is therefore not merely the history of the music of the Slovaks Earliest times Bone pipes dating from the Early Bronze Age (about 3000 BC) have been found in the Nitra region, testifying to the early role of music in the Celtic 'Nitra Culture'. Such instruments were produced continuously, albeit with more sophistication, up to the mediaeval period. Other early instruments found include drums dating back to the Palaeolithic period, iron and bronze bells from the 3rd or 4th century AD. Other folk instruments of the region whose early development must remain largely conjectural include the fujara and the Slovak versions of bagpipes and the jaw harp. They certainly existed in the 15th century. The medieval period From the medieval period onwards writers identify a number of principal streams of music in Slovakia. The principal classifications include church music, folk music, and instrumental music heard in towns and courts. Each of these has of course numerous subsidiary classifications. Some of the oldest recorded forms of music in Slovakia are liturgical song (in Old Slavonic) from the time of Great Moravian empire (9th century), from which developed much of the sacred music of later centuries. Latin plainsong was also widespread in the region at this early period, especially after the incorporation of Slovakia into the Kingdom of Hungary in 1218. Early codices include the 'Nitra Gospels' of c. 1100, and the 'Pray codex' (c. 1195). From the 15th to the 17th centuries, polyphony was practised and developed at many urban centres, including Bratislava, Bardejov,