The works of Bela Bartok are generally approached from either of two theoretical premises. The first being an extension of traditional western art music that has preceded him (particularly the expanded harmonic resources which emerged during the 'Romantic' musical period), the other being from Bartok's own research into the folk music of Europe. It has been said that through this research, Bartok was able to free himself from the "tyrannical rule of the major and minor keys, leading eventually to a new conception of the chromatic scale, every tone of which came to be considered of equal value and could be used freely and independently."1 Bartok was not noted for his use of 12-tone concepts per se, but his search for harmonic freedom did parallel the concepts of the 12-tone composers of his time.