U2 heading back to their school playground for a 50th anniversary gig is the kind of full circle moment that reminds you why rock and roll still matters. There's something rather lovely about one of the world's biggest bands returning to where it all started, especially when you consider how many people probably walked past that Dublin school without knowing it was where one of the most influential groups in music history came together. For Cledvibes Radio listeners who grew up with these lads, it's a nice bit of nostalgia, and for younger folks discovering their catalogue, it's a brilliant example of how some artists never lose sight of where they came from.