Completed in 1947 and premiered the following year by Mrs. Runako Takada. The composer, who lost his home during World War II due to war damage, composed it in a mountain village in Shinshu and completed it in Tokyo after the war. It consists of five movements, each with a title evoking rich nature. These titles are based on the composer's memories, and a comment is added advising performers not to be overly constrained by them.

I. In the Azure Marsh

The first movement, "In the Azure Marsh," is in 4/4 time and marked "Grave (stagnant)" at the beginning. Perfect fifths are characteristic throughout the piece. Unisons in octaves and chords between the left and right hands are also prominent. The opening features chromatically rich melodic progression.

II. Sunlight Dancing in the Wind

The second movement, "Sunlight Dancing in the Wind," is in 6/8 time and marked "Allegretto (clear and pure)" at the beginning, suggesting a contrast with the previous movement. The main theme impressively begins with a leap upwards by an octave. In the left-hand accompaniment, the characteristic fifth intervals from the previous movement are hidden throughout. Furthermore, the 11-measure Poco meno mosso at measure 28 evokes the atmosphere of the previous movement. Immediately before it, two measures of 2/4 time, where eighth notes are indicated with the same note value, are inserted. The main theme, which reappears after the Poco meno mosso, is placed in the left hand, with the right hand taking on the accompaniment role. The final three measures are also marked Meno mosso.

III. Wood Pigeon

The third movement, "Wood Pigeon," is in 4/4 time and marked "Lento (languidly)" at the beginning. Although the composer commented not to be overly constrained by the title, the use of quintuplets and septuplets makes the piece imitate bird calls. At measure 13, only one measure of 2/4 time is inserted. The dynamics are centered around ppp-p.

IV. Indigo Valley

The fourth movement, "Indigo Valley," is in 2/4 time and marked "Vivo (flowing)" at the beginning. It begins with ff, and if the previous movement had spotlighted a part of nature, this one gives the impression of the view suddenly widening. However, it diminuendos in the second measure, and the main theme presented from the third measure is marked p. Throughout the piece, the two-measure figure from the beginning serves as accompaniment, over which a melody marked "ben marcata la melodia" is placed. The dynamic range used is wide, from ppp to fff.

V. Mountains at Dusk

The fifth movement, "Mountains at Dusk," is in 12/8 time and marked "Lento tranquillo (dimly)" at the beginning. This movement is characterized by elements from the previous four movements gradually appearing.