“Piano Music No. 2” is a piano piece written by graphic notation. It was composed for avant-garde pianist, David Tudor and premiered at his recital in 1959. The music score has been published by Peters.

In this period, Ichiyanagi encountered “music of indeterminacy” proposed by John Cage in the United States, and produced many works after long slump. All of the seven songs contained in his “piano music” series are works of this period. Ichiyanagi’s words, “Composition is not to prescribe, but to present possibility”, indicates confessions to “music of indeterminacy”.

There are no staves and no notes on the four graphical scores shaped as a square. On the score, circles and lines are drawn like abstract paintings. According to the annotation such as “〇: Play the keyboard”, “●: Play the inside of the piano”, “／: High range”, “‐ : Middle range”, we have to play the score by improvising. The appearance of music changes greatly depending on the sense and idea of   the performer, because pitches and volumes of sound are uncertain. Unlike the performance of traditional pieces, a player’s creativity is greatly needed.