Nordman is a Swedish duo founded in 1993, that mixes folk music with rock and pop. This genre is called etno-rock or folk rock in Swedish. The group consists of Håkan Hemlin, as singer and frontman and Mats Wester, who plays the nyckelharpa as well as serving as the main songwriter.
The nyckeharpa, frequently used by Mats Wester in Nordman, translates in English to "keyed fiddle", or "key harp", is a traditional Swedish musical instrument. It is a string instrument or chordophone. Its keys are attached to tangents which, when a key is depressed, serve as frets to change the pitch of the string.