What noise does the vuvuzela make?

The vuvuzela is a brass instrument that produces a loud, low-pitched sound. It is often used in African music, and has become widely popular in recent years due to its use in the 2010 FIFA World Cup in South Africa. The sound of the vuvuzela has been described as a buzzing or humming noise, and has been compared to the sound of a beehive, a fog horn, or a didgeridoo.