So i just came across this iPad app called "Sound+Vision BackStage". Played around with it a bit and i must say its pretty damn amazing for a free app. I live in NYC and it list concerts based on your iTunes library or desired location. Its ridiculous to see there were 275 shows on a Saturday. I thought that was the app itself until it gave me band bios, tickets videos and i think downloads? I cant remember but i highly recommend it.