I like the idea. Maybe you could leverage Songkick API to support more cities ? (I moved to Tel Aviv recently and it's really hard to spend the time to find out which concerts are worth going to)
I've been working on something in a similar direction for Vienna. Tried to get SongKick API access, but they declined me. I also used BandsInTown on a project, but it's a bit limited. These days I'm just using Facebook Events, which is ok, but not perfect – can't get all the events in a particular city automatically. Managed to manually overcome this though.
But great work! Tried the app out and I really like it. Followed you on Twitter if you want to keep in touch. Would be nice to have some MusicEventsHackers group to discuss these topics :)
- on Facebook
https://www.facebook.com/groups/2016318755302445
- and on Reddit