Jón “Jónsi” Birgisson (born April 23, 1975) is the guitarist and vocalist for the Icelandic post-rock band Sigur Rós. He is known for his use of a cello bow on guitar and his falsetto voice. Jónsi is blind in his right eye. He is openly gay, and his boyfriend Alex Somers has done much of the graphic design for Sigur Rós. They also perform together as an art collaboration called Jónsi & Alex. They released their self-titled first book in November 2006, which was an embossed hardcover limited to 1000 copies, along with their first album, Riceboy Sleeps, in July 2009. Jónsi is a vegetarian, and also prefers to eat only raw food.
On December 1, 2009, Jónsi's official website, jonsi.com, was launched, in anticipation of his upcoming debut solo album, Go, released the week of April 5, 2010. After the release of the album, Jónsi promptly started a worldwide tour across North America and Europe, featuring songs from the album plus a few other selections, planning to tour from March-September.
In late-January 2010, Jónsi had announced that Sigur Rós was on "an indefinite hiatus," as the band had scrapped plans for a new album previously announced to be released in 2010, saying that "they were just rumors." The band has decided to take the year off, as several members of Sigur Rós recently had children, and as Jonsi's solo career has been developing.

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