Mikrokosmos (Bartók)

[2] The individual pieces progress from very easy and simple beginner études to very difficult advanced technical displays, and are used in modern piano lessons and education.

In 1940, shortly before they emigrated to the United States, he arranged seven of the pieces for two pianos, to provide additional repertoire for himself and his wife Ditta Pásztory-Bartók to play.

[5] The title Mikrokosmos comes from the Greek mikros kosmos, meaning "little world", to reflect Bartók's aim that the pieces "deal not only with the rhythmic, but also with melodic, harmonic and pianistic problems.

Ernst Roth, as representative of the publisher Boosey & Hawkes, initially suggested "Progressive Piano Pieces in Modern Idiom", but this was rejected by Bartok on the grounds that "in 20, or let us say in 40 years this work will cease to be 'modern.'

Pianists who have recorded all six volumes include György Sándor, Edith Farnadi, Homero Francesch, Zoltán Kocsis, Dezső Ránki, Jenő Jandó, Claude Helffer, and Georges Solchany [ru].

The first 10 measures of No. 131, "Fourths"