1) ryo is a famous songwriter amongst Vocaloid2 fans. He made some of the most professionally Hatsune Miku songs such as MELT, Black★Rock Shooter, and World is Mine.
2) Ryo is a female doujin vocalist. Circle: AniPix
3) Ryo is a doujin music arranger. Circle: ether
4. Ryo is a doctor in Japan, who posts songs on iCompositions, a site for songs created using the Mac application GarageBand. His first few songs were short, Beatles-inspired songs, and all his songs have a 60s-70s feel to them.