The album "Sekai" consists of only one 69-minute track, but because Bandcamp does not allow uploading such long tracks, it is split up into four parts here.
“Sekai” (世界, ‘world’), is a mix of four layers of solo improvisation on multiple instruments, one of those layers being a mix itself. The four layers resulted from four recording sessions. The first and longest of these was focused on creating loops, drones, and background noise. Selected material from this session was arranged on the four audio tracks that together form layer 1. Layers 2 to 4 were added one after the other by means of improvisation while listening to the previously recorded layers. These sessions were exactly as long as the finished recording (i.e. 69 minutes and 2 seconds), and no edits or changes to the session recordings were made other than volume adjustments (and a bit of reverb in case of layers 2 and 3). For layers 2 and 3, only acoustic instruments were used (and thus no effects or other electronics). Session 4 made use of electric instruments and a number of effects.
Instruments used include Bassanxi, a four-string instrument (tuned like a bass) combining design elements from both the guzheng (古箏) and huqin (胡琴) families of instruments; Chaĭlaazkhuur, a tea can with a neck, fingerboard, and one string; Hichiriki (篳篥), a traditional Japanese double reed instrument used mainly in Gagaku (雅楽), Japanese classical music; Sousen, an electric string instrument used for sound effects and noises; and Zarazara, a small box with short pieces of bass B-string attached on one end for creating crackling and other noises. Except Hichiriki, all of these instruments were designed and built especially for this project.
“Sekai” comes in two editions. The Orginal (White) Edition is the original 69 minutes, four-layered session, as it was created and as it was and is intended to be heared. The Black Edition is a remix, cutting up the original in 5 parts each between 12 and 17 minutes. The Black Edition is only available as a download. The White Edition is available on CD.