What ARE those funny noises?
Throat singing (or overtone singing) is a way of making noise which allows the singer to produce more than one note at the same time.
Overtone singing uses a bass note (fundamental) and then uses the shape of the throat and body to bring out the natural harmonics of that fundamental note.
There is a brief description from the Smithsonian here, and some more detailed information on Wikipedia here.
Nathan teaches and performs Tuvan throat singing.
Nathan Rogers in Iqaluit, Nunavut at a pre-party prior to giving a fundraising concert. Nathan is Mongolian throat singing, Celina (an internationally renowned Inuit throat singer) and friend are Inuit throat singing and Travis Daley is beatboxing. Bringing together different cultures and musical genres for a merger that ended up being more than wonderful!