Come now, McGrath, this is a folk site — surely you know better than try to establish a definitive version. Either mine/JoeF's [similar tho I prefer my 'blew' to his/your 'burst'] will fit the flourish, yours with emphasis on the 'go', his/mine on the 'was'...

I find it interestg that his 1958 St Andrews Univ version should start so similarly to my mid-1940s Hendon County School one, even to the detail of 'Hudson Bay' - no matter that they then diverge; only 2B expected...