Alva Noto
Vrioon is the debut collaboration album between Ryuichi Sakamoto and Alva Noto, released in 2002. This is the first album in the "Virus Series" followed by four other records: "Insen" (2005), "Revep" (2006), "utp_" (2008), and "Summvs" (2011). The initial letters of the five albums together form the word "Virus".