The great thing about the progressive rock genre was the explosion of musical ideas, a lot of these ideas could be regenre-ised into the neo-classical genre because these ideas were being created by classical musicians that crossed over from the classical field to the rock field, Rick Wakeman being the best example for Yes. Others were Jon Lord from Deep Purple, Keith Emerson from Emerson, Lake and Palmer and John Evan from Jethro Tull to name a few. Yes' 4th album ‘Close to the Edge’ (the second album produced in 1972 for Yes) did not really capture the excitement of their previous albums and may be seen as an album that mopped up the ideas left over from the last album (Fragile) therefore I have rated this album as average. The musical ideas are there, however the melody lines that were so present in their previous albums is sadly lacking in this album. An album for the stalwarts.