The 1920 version is much closer to the final revision than to the original 1913 version, but the slow movement and the epilogue has some extra music that VW would eventually prune. In the slow movt.'s case, it's music that's only to be found in the 1920 version.
Am playing it now, in the Dutton version: Martin Yates conducting the Royal Scots. Never realized before that RVW composed some new music for the Lento of this 1920 version (when he could finally take up composing again after his extended war service, polishing The Lark Ascending into something even more idyllic as a monument of a forlorn world and finishing the Pastoral as his personal 'War Requiem'). Many thanks!
