sentences:  The tour normally showcasts the main protagonists of the independent alternative rock scene, with a number of relatively unheard of bands usually supporting more mainstream acts.A number of previous support acts on the tour have gone on to become very successful commercially, such as Arctic Monkeys (support act in 2006) and Franz Ferdinand (who played the opening slot in 2004).Since 2005, the tour has been sponsored by unisex hair product company ShockWaves.