On a completely separate note I had loads of school marking (grading) work to do tonight but have done nothing yet thanks to this thread. So if I get fired it will be the fault of John, Sarge and Ritter! 
Just allocate grades randomly...

All this Walton talk has led me to listen to the
Viola Concerto again, in William Primrose's 1946 recording under the composer with the Philharmonia :

Waiting for the last movement, allegro moderato, which IIRC is IMHO the highlight of the whole work..