Jón þor Birgisson, born on April 23, 1975, in Iceland, is the vocalist and guitarist of the Icelandic post-rock band Sigur Rós. Known for his unique technique of playing the electric guitar with a violin bow, Birgisson also employs a falsetto voice, with some sources describing his range as a countertenor. Sigur Rós has gained international acclaim for their ethereal soundscapes, with albums like "Ágætis byrjun" and "Takk..." featuring iconic tracks such as "Svefn-g-englar" and "Hoppípolla". Birgisson has significantly influenced the post-rock genre with his innovative approach and hauntingly beautiful compositions.

• Country: Iceland
• Language: Icelandic, English, Malay