To promote the WreckHouse International Jazz & Blues festival (formerly known as the St. John's Jazz Festival), wind-swept people were hung from poles in the area to visually connect people to the branding of the festival. The WreckHouse name was adopted after a place in Newfoundland, Canada known for its high winds and gusts. The metaphor is a humorous and clever one, definitely a great way to get people talking about and excited for the festival.
The creative use of promotional music items is by no means a new way to draw attention to a brand or event, but when used in the right way like this case, they can be extremely creative and effective.
The crux of guerrilla marketing is about reaching the target audience in a creative and atypical manner. In this respect, this WreckHouse campaign was successful.