Grainger's piano music is notoriously difficult, and it's also fairly uneven, so a complete survey is bound to have its highs and lows. Martin Jones does make a few obvious fluffs, but these are easy to overlook, given the great musicality of these performances. The sound quality is good, though some may find the tone a little too mellow and the acoustic a little too spacious for their tastes. For me, perhaps the best things about this set are the fillers on the 5th disc - here are some fantastic gems for multiple pianos and and multiple pianists. The English Dance for 2 pianos-6 hands is simply fantastic. Overall, this is a very enjoyable set, so long as you're reasonably selective. A must for Grainger fans, and enhanced by excellent programme notes.