I saw The Pierces a few months back in Manchester and their sound with their harmony vocals over their backing band was brilliant. It could best be described as folk-rock-pop with an edge, and the overall sound was similar to the You and I album. They also did a great unaccompanied version of Simon and Garfunkel's 'Cathy's Song' which showed off what a great sound they can generate just from their two voices in harmony.
There's no doubting that the Pierces write great songs, but if you are expecting another 'You and I' this may disappoint a little. It is a very accomplished album but the production on most tracks to these ears is more synth-pop, similar to what you might expect on a Madonna album. For this reason I feel the vocal harmonies don't have the same impact as on the previous album, and this collection doesn't have the same musical edge with the instruments and vocal inflections getting lost a little in the big production. A similar thing happened a little with First Aid Kit's last album - when a band experiences success they can be sucked into doing larger and larger productions on their records, in the process losing something from the individual sound which brought them their following.
Obviously only my opinion, and there is not a bad song even on the expanded 16 track CD - just I would have preferred more of a folk rock feel to the proceedings. I personally love 'Monsters', and 'Flesh And Bone', possibly because they are closer to the tracks from the 'You and I' session. But there are admittedly great pop songs on here too, including 'The Devil Is a Lonely Night' and Chemical Reaction'. Their song writing talent and vocal ability alone rate 4 stars.