It sounds like a lot of old Scottish waltzes. He must have heard them in the Salford community and elsewhere/
He refers back to the mountains in his requiuem song very poignantly.
The Clarion was a socialist journal and people discussd it avidly on rambles and cycle rides etc . The Clarion Club was named after the journal and is still going strong., Mike Harding was on TV last night leading it at a memorial event with a choir and a massed audience as part of a big celebration week.
The Communist party was very astute in using rambling, drama, folk song etc to engage young people. As an ex YCL member from the 50s I found no problem with that and welcomed Topic Records , WMA etc.
I wish we had more such radical organisations still