Ben from Songkick here and we'd love to work with you on this. If you reach out to me I'd be happy to sort you out with API access. ben[at]songkick[dot]com
It's a shame you decline any apps with monetisation ideas. I think it would be better to offer a paid API service a la Google APIs than to have so many engineers reinvent the wheel. Oh well, I guess the music industry and logical business models never did go hand in hand :/