Awesome, had been planning to make something like this myself to keep track of all the gigs I get to. Nice simple UI, does exactly what I want it to. Keep it up!

Edit: Ok, two minor annoyances. Firstly, if gig details aren't found or listed for an artist, I can't manually enter the date/venue myself. Secondly, I'd like to be able to click the heading on my gig list to sort it by date/artist. Also getting errors pretty much every time I add a new artist, presumably just from overload.