Born in Tokyo in 1948, Seiji Nagai studied drums in a music class when he was in junior high school. He op ened his eyes to free jazz and improvisation, started an improvisation concert with Tokio Hasegawa i n 1967, and played the trumpet as a member of the "Taj-Mahal Travelers" in 1969. After that, Mr. Nagai studied sitar at an music school in India. After he returned to Japan, he perf ormed sitar concerts all over Japan. He started composing on a computer around 1979, so this time his works will be introducing works at that time.

Two pieces were recorded on each side of cassette tape, which are written only as Medium and Sea, are a minimalist, floating sound composed mainly of synthesizer refrains, with ambiguous be ginnings and endings. The sound of real waves is added to the Sea. From that time on, he was interes ted in environmental sounds. The two works revealed this time are regarded by Mr. Nagai himself as "these are the origin of my sy nthesizer and computer music." - from liner note by ONNYK