That instantly familiar guitar intro to 'Beautiful Day' informs all and sundry that U2 are back and this time they actually sound like U2 rather than a group of embarrassing dads at the disco. 'All That You Can't Leave Behind' recalls the glory days of 'The Unforgettable Fire' and 'The Joshua Tree' era. Admittedly some of the production techniques are more modern but for the first time in a long while The Edge is allowed free rein to recall his mid-80s heyday whilst Bono's voice is invigorating rather than tired. The happier moments such as 'Stuck In A Moment You Can't Get Out Of' and 'Walk On' are good enough on the album (although 'Wild Honey' is just a tad too summery) but the best moments arguably occur towards the end with the triumviate of 'Peace On Earth', 'When I Look At The World' and 'New York'; they are subtler but still magnificent tracks. Around the age of 40 U2 have gone back to their roots and although this isn't the best collection they've released it certainly indicates a welcome return to form.