A piano piece commissioned by the pianist Kayako Matsunaga in 1984 and premiered in her debut recital, Blending is an attempt to ‘blend’ the music by pairs of composers such as Stravinsky and Satie, Bach and Xenakis, etc. Yori-Aki Matsudaira divides 10 minutes, the duration determined by Matsunaga, into 60 sections of 10 seconds in average. Then he estimates the number of fragments at 30, and decides to use 27 by calculation of probability. After preparing 27 pairs of composers and 54 fragments, he ‘blends’ them by using tone materials of the composer written to the left, and rhythms of the ones written to the right. Matsudaira says that he selected ‘all the famous composers, regardless of whether I like them or not’, and the names of the composers are written on the score. On the other hand, he says that some of the fragments were ‘jotted down when I dropped in at music stores,’ and the titles of the pieces which include such fragments are not indicated, though well-known ones like ‘Träumerei’ of Schumann can be easily detected. Matsunaga has identified the titles of the pieces of Xenakis, Denisov, Bussotti, etc. This ‘blending’ of disparate musical styles adds a touch of humor, despite the systematic control of the form. The score was published by Sonic Arts.