Jón "Jónsi" Þór Birgisson (pronounced [ˈjouːn ˈθouːr ˈpɪrkɪsɔn, ˈjounsɪ] ( listen)) (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. He is blind in his right eye. Apart from Sigur Rós, Jónsi also performs together with his boyfriend Alex Somers 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. On December 1, 2009, Jónsi's official website, jonsi.com, was launched in anticipation of his debut solo album, Go, which was 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 to September.