So, Nokia's Music Store has finally gone live in the UK this morning, albeit just slightly later than the promised 7am opening time. I got straight on there to roadtest the service and see how it compares to iTunes. My collected thoughts are below, but the topline is this: good design and usability, a nice selection of music, some niggles around payment and compatability, and the unlimited streaming feature experienced some early teething problems. But read on for the blow-by-blow account.