Well done, Jeri !(Just remembered ... Phyllis knows a bit of song that an old trader used to sing driving through Ceredigion collecting socks - long story - with the lines punctuated by him calling out "Gee up, Jeri" to his mule.)
Anyway, that logger song kinda sounds like the one I had in mind. Can't hear the tune til I get home and on a better computer than here at work!
thanks, sian