A growl and rumble from the piano's lower depths begins the first movement's rhythmic ostinato, agressively concluded with a series of hammered out chords. The composer states that his main influence was the music of the northern part of Argentina, the first movement developing the dance Palapala. The nocturnal second movement has a mysterious and ambiguous quality, fantasy-like in its evocation of perhaps a macabre program. It is based on folk tunes from the lonely and desolate punas of the Andean nations of South America. The toccata final movement, titled "Ostinato Aymara" comes from a dance called "karnavalito". The Aymara are a people that have inhabited the sierra of Peru, Bolivia, Chile and Nothern Argentina. Though their language is barely perserved, Aymara customs are still preserved in the remote reaches of these countries.

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