I (finally) have been able to have a first "go" at the 5th, so my impressions are extremely preliminary, but what I hear I like very much indeed! It is a quite compact compendium of most "techniques" Sorabji used in his music (the only thing rather remarkably absent is a set of variations).Sorabji wrote the 5th after some several years of abstinence from composing, and this work shows just how much he was wrong in thinking he was "written empty".
What struck me perhaps as most impressive is how the work seems to have ended after the Fugue, after which the real last movement starts on a "pulsating drone", out of which a sort of chorale emerges en later on more and more. Not unlike how, after a dark night, the first glimmers of light let you, slowly and inperceptably, perceive more and more of your surroundings. I think this last part is, to me at least, the most hauntingly beautiful part of the whole work, so just as well Sorabji saves it for the last. (NB according to the liner notes, the first page or so of this last part is an all but verbatim copy of the opening of the last movement of Piano Symphony "No. 0". So I am most curious to that work too! Not that I wasn't beforehand, but now even more!).
Dnna Amato's playing sound quite wonderful, and the recording is nice too, so in all I would most highly recommend it to anyone interested (or curious about) Sorabji.
To that I would like to add that buying this or other CDs from the Sorabji Archive is helping said Archive - without whose tireless and ongoing work neither this nor any other recordings and/or concerts would have come about - to some extra income, necessary to maintain it. So if you like the music of Sorabji, think of the Archive too!
But I found the piece somewhat underwhelming. The 4th symphony is better.
I think Sorabji's later works just need a bit more time to settle in, that's all. I cannot say either the 4th of 5th is better, they are very different works (for ex, no. 4 contains a 100 minute Theme and Variations, while the 5th has no such movement). I like and love both, and am most curious about the other five...'
all best,
gep