is a festival oriented towards music that is sometimes presented with a theme such as musical genre.
They are commonly held outdoors, and are often inclusive of other attractions such as food and merchandise vending machines, performance art, and social activities. During the Middle Ages festivals were often held as competitions. Many festivals are annual, or repeat at some other interval. Some, including many rock festivals, are held only once. Some festivals are organized as for-profit concerts and others are benefits for a specific cause.