Swedish folk music is a genre of music based largely on folkloric collection work that began in the early 19th century in Sweden.[1] The primary instrument of Swedish folk music is the fiddle. Another common instrument, unique to Swedish traditions, is the nyckelharpa. Most Swedish instrumental folk music is dance music; the signature music and dance form within Swedish folk music is the polska. Vocal and instrumental traditions in Sweden have tended to share tunes historically, though they have been performed separately.[2] Beginning with the folk music revival of the 1970s, vocalists and instrumentalists have also begun to perform together in folk music ensembles.