Design cutting edge backstage artwork to be seen by major bands and artists

I need to get the message over to bands and artists backstage at the Victorious Festival in Portsmouth. We are sponsoring the backstage area and will have posters in the artist portacabins and in the canteen area.
I need to get a message over to bands that they should use our app. It needs to be done in a very relaxed way and in no way actually look like a normal advert.
I want to get a cutout pic of me in the ad so people backstage instantly know who i am - so they will talk to me.
Art is available from our website, but I need a cool punchy ad.
So far I think a pic with me in it and "come and talk to GigKev" (silly but it is for bands to read) works. BUT, I also need to get over the message of the app in a cool way. TIP: If it looks like advertising it won't work.
www . gigrev . com

Kev