instruments of the country. The gaida most widely used is the Thracian gaida. There is in the Rhodope Mountains the deep-sounding kaba gaida. In the north, common of Dobrudzha and the Vlachs there is the dzhura gaida. Also in the Strandzha region near the border with Turkey there is the Strandzha gaida. The bag itself is made of a goat skin turned inside out, and most often the rims of the different parts of the instrument - chanter and drone pipe - have a piece of horn on it. Dances have complex steps matching the rhythms, and are often fast. Most are circle-dances or line dances called horo; but some are done singly or in pairs. Although traditional music and dance are not popular among Bulgarian city youth, they are often performed at weddings, and generally in countryside festivals. They are also performed in Bulgaria and abroad by amateur and professional performing artists and choirs. Regional folk musical styles abound in Bulgaria. Northern Bulgaria, Dobruja, Shopluk, Thrace, Strandzha, Macedonia and Rhodopes - all have distinctive sounds. Much of traditional folk music revolved around holidays like Christmas, New Year's Day, midsummer, and the Feast of St. Lazarus, as well as the Strandzha region's unusual Nestinarstvo rites on May 21. Several world-renowned troupes perform Bulgarian folk music, including the State Ensemble for Folk Songs and Dances, founded by Philip Koutev (1903-1982), Trio Bulgarka and the Bulgarian State Television Female Vocal Choir, who are featured, among others, on the anthologies titled Le Mystère des Voix Bulgares, volume 2 of which received a Grammy Award in 1989. One internationally known artist, Valya Balkanska, sang the song Izlel e Delyu Haydutin, which was chosen to be part of the Voyager Golden Record selection of music sent into space in the two Voyager spacecraft launched in 1977. The Bulgarian State Television Female Vocal Choir also known as Mystery of Bulgarian voices has also attained a considerable degree of fame. Customs and rites Bulgarians often give each other a martenitsa () — an adornment made of white and red yarn and worn on the wrist or pinned on the clothes — from March 1 until the end of the month. Alternatively, one can take off the martenitsa earlier if one sees a stork (considered a harbinger of spring). One can then tie the martenitsa to the blossoming branch of a tree. Family-members and friends in Bulgaria customarily