From the latter half of the 1980s to the 1990s, Yori-Aki Matsudaira was often commissioned to write piano pieces not only by Kayako Matsunaga and Akemi Satomi, but also by winners of the Japan Contemporary Music Piano Competition such as Yoshiko Shibuya and Kazue Nakamura, and pianists who had participated in Haruna Hirao’s ‘Masterclass on Performance of Contemporary Piano Music’, organized by the JML Seminar Yoshirō Irino Music Institute. GALA was dedicated to Kazue Nakamura, the 1st prize winner of the 3rd Japan Contemporary Music Piano Competition (1989), and premiered by her at a portrait concert of Matsudaira, organized by the JML Seminar in 1990. This piece is similar to Blending in that it consists of fragments cited from the music of 27 composers, many of which are paired as in Blending, while the composition of GALA is not based on mathematical procedures, even indications such as sadly or gaily being freely inserted. The variety of styles of the composers, including Monteverdi and The Beatles, should also be noted. A glissando divides the piece into two halves, the first treating love and the latter death or parting. These themes are reflected in the titles of the music chosen and the words such as ‘Venus’ or ‘Aphrodite’ in the first half, which, transformed in Morse code, determine rhythms. Elements other than citations and rhythms are determined by pitch interval technique. The score was published by Sonic Arts.