Jónsi & Alex is an Icelandic-American artistic collaboration between Jónsi and Alex Somers. They create ambient music as well as visual art. The music tends to be more ethereal and experimental than that of Sigur Rós, Jónsi's primary musical project.

Jón Þór "Jónsi" Birgisson is an Icelandic musician; he is the vocalist and multi-instrumentalist for the Icelandic post-rock band Sigur Rós. He is known for his use of a cello bow on guitar and his "angelic" falsetto or countertenor voice.