A new hobby

I decided that I need a musical hobby so I ordered this from ebay:


After my initial try last night I'm pretty sure I'm going to need a lot of practice unless of course the whistle is supposed to be screechy and terrible sounding. I'm pretty sure it's not.
After I become a professional tin whistle player I'm thinking of quitting my job and going on tour with an Irish folk band. I'm sure the list of ten songs provided in my book and accompannying CD will be plenty to work from - most Irish folk bands play Mary had a little lamb don't they??