Additional revenue is also often raised through in-concert advertising , from free local concerts for local sponsorships to sponsorships from corporations during major tours 2009 's `` Vans ' Warped Tour Presented by AT&T '' .
Additional revenue is also often raised through in-concert advertising , from free local concerts for local sponsorships to sponsorships from corporations during major tours , such as 2009 's `` Vans ' Warped Tour Presented by AT&T '' .