Oren Ambarchi is a multi-instrumentalist from Australia, whose main instruments are electric guituar and percussion. He is one of the most prolific and versatile musicians around, an avid collaborator and improviser, who has worked with many of the most important figures of the experimental underground. In 2013, Ambarchi presented "Knots" live at Unsound, this year he came back to surprise Greg Fox during his Gregidency show.