Given the first line of the third verse, would it not be "the Brum", since one old familiar term for the city was "Brummagen" (nineteenth-century), and "Brummie" is still certainly heard as a word for a local. Sure to be someone who knows if the place itself is called by locals "The Brum", and to what extent the other two words are used by them.

Good Luck

ABCD,
who spent a good deal of time straining to decipher words from old recordings, until he learnt about Mudcat.