Immediately after "Aeolian Trio" was written (from a high school student's request) and introduced on Kaneda's website in Spring of 2002, another student in Sakura, Chiba, asked him to make it into a quartet. Completion was delayed due to a relapse of cancer. Finally, "Aeolian Quartet" was born in September, 2003. The title means "quartet in the Aeolian mode" (natural minor scale). It is in three-part form: fast-slow-fast. Beginning with a cheerful march, Marimba presents a beautiful melody in the middle section, and it concludes with the march. In this version, Vibraphone was used for color and energy, and a new ending was added. In this work, like others from Mr. Kaneda, normal instruments are effectively used to realize a rich singing style, and its educational consideration allows beginners to also perform.