Gig Finder first sketches

Im starting on a new project today. I will design the icon for the upcoming app Gig Finder (work title). It's an iPhone app for finding, attending and organizing concerts and also get additional info about them.

These are the first hand made sketches for the project. Please give me input. I will keep the whole project open for you all to see so I hope I will get good feedback since I will try to use Dribbble as it is intended to be used (and not only as a portfolio as I see many people do).

Also feel free to give me brand new ideas for the icon and just not only for the sketches I've made.

Thanks, M