Zoltán Kodály and Béla Bartók observed that Hungarian "peasant music" use isometric (with an even number of structures) strophe structure and certain pentatonic (five tone) formations, along with a liking for tempo giusto (rhythm consisting chiefly of equal values). These features jointly may be considered as altogether typical, and differentiate "Hungarian peasant music" from that of any other nation. Bartók studied over 300 melodies, and noted that more modern tunes used for dancing featured pentatonic turns with frequent leaps in fourths