Transylvania as originally defined in Treaty of Trianon, 27 years earlier, thus confirming the return of Northern Transylvania to Romania. From 1947 to 1989, Transylvania, along with the rest of Romania, was under a communist regime. The ethnic clashes of Târgu Mureș occurred between ethnic Romanians and Hungarians in March 1990 after the fall of the communist regime and became most notable inter-ethnic incident in the post-communist era. The Transylvanian Plateau, high, is drained by the Mureș, Someș, Criș, and Olt rivers, as well as other tributaries of the Danube. This core of historical Transylvania roughly corresponds with nine counties of
Music of Transylvania sometimes with a cimbalom, are the most integral ensemble unit. They are used to play a wide variety of songs, including numerous kinds of specific wedding songs. Hungarians from Transylvania, which make up around 20% of the population of Transylvania, are known for their vibrant musical cultures, famous examples being hajnali songs and legényes (young men's dance). In fact, Transylvania was an important center for Hungarian music in the 16th century because at that time it was the only independent Hungarian province not occupied by the Ottoman Empire. Drum, guitar and violin make up the typical band in Maramureş, and