Since 1980, in the first week of each July the Old Music Festival is organized in Miercurea Ciuc. The communists banned the festival in 1986 but it was restarted in 1990. Participants come from other countries too: from Hungary, England, USA, Turkey, etc. who are dressed in clothes of the age and entertain the lovers of the form with old music not only in Miercurea Ciuc, but also in Lăzarea. The recitals are performed in the Mikó castle (built in the 17th century), in the baroque church of Şumuleu and in the Lázár castle of Lăzarea. The Gregorian, Middle Age and baroque classical music and dance, the clothes of the age and the antique musical instruments recreate the atmosphere of the renaissance and baroque.
The Romanian Ministry of Culture, the Council of Hargita County, the Cultural Supervisory Authority of Hargita County and the City Council of Miercurea Ciuc organizes the biggest old music festival in East- and Middle Europe.
The festival beside the new participants has permanent world famous participants too as the Kecskés Ansamble from Szentendre, the lute-player Lőrinczi György from Tărgu Mureş, the Ars Renata Ensemble from a Budapest, the organ-players Kecskés Mónika and Deák László from a Budapest, the Madrigal choir from Bucharest, the Musica Matricana from Százhalombatta, the organ-player Paul Cristian from Braşov.