Mel Tormé's "A Foggy Day"

I'm still making my way through my ten-CD Gershwin set.  To-day, it's the penultimate disc, subtitled "Gershwin in Jazz."  I might have noticed something about Mel Tormé's "A Foggy Day," although I'm not quite sure about it.

At about 0:15, there's a woman's voice saying, "Cockles and mussels."  I think this is a reference to the folk song "Molly Malone," the chorus of which also involves "cockles and mussels."  Each verse of "Molly Malone" ends with some variation of "Through streets broad and narrow / Cryin', 'Cockles and mussels, alive, alive oh,'" and the chorus is comprised of the same words:

'Alive, alive, oh
'Alive, alive, oh'
Cryin’, 'Cockles and mussels
'Alive, alive oh'

Leaving it at that, it seems to make sense, but the first line of "A Foggy Day" is "A foggy day in London town" (my emphasis), where "Molly Malone" is set in Ireland.  Since it's a folk song, there are different versions, but the two I know (one by the Countdown Singers and one by Pete Seeger) both start with something like "In Dublin's fair city / Where the girls are so pretty / I first set my eyes on sweet Molly Malone."  Were it not for that discrepancy of setting, I'd be more confident about this reference.