Last Concerts maintains the list of concerts you attended on Last.fm and discovers which ones are going on in your neighborhood.
You need a Last.fm account. On first launch Last Concerts synchronizes all your events and shows an overview of your concert history.
Each concert can be viewed in detail and the attend status can be changed. You can see an SMS-style overview of the shouts, a list of the attendees and you can browse all the photos that have been uploaded to Flickr for the event.
When searching for events the default view gives you concerts in your neighborhood. Use the search field on top to search for specific artists.