Blowing a Viking horn is a simple process of using the instrument's natural shape to create a unique booming buzz sound. Viking horns are made from a single piece of cow horn and do not often require reeds or other mouthpieces unless the natural mouthpiece is extremely thin. Producing sound through a Viking horn is similar to blowing air through a trumpet.

Grip the Viking horn around the center of the instrument with your dominant hand to ensure stability.

Purse your lips tightly against the edges of the natural mouthpiece. If you find the Viking horn's natural mouthpiece too thin, it may help to attach a brass mouthpiece which can be purchased from a local brass instrument store. Look for a trumpet or French horn mouthpiece and have it molded to fit the contour of your horn.

Blow strongly and consistently into the mouthpiece while pursing your lips. Your lip's vibrations create a buzzing sound in the mouthpiece that booms throughout the instrument.