Gigbox is an awsome app!!! If you are a music lover and love live music even more Gigbox is great for being notified of when your favorite bands are playign concerts near you.
Here is a long review I wrote if you interested:
How to Find Live Concerts with an Android Phone - Associated Content - associatedcontent.com
but if your a music fan skip the review and just download the app and try it yourself, its probably faster! And its a great app