Well, Aine, I do additional verses now and again, meself. For example, I like to get the sots singing along on "Molly Malone" about this time of year, but it's so short that it's over by the time they get really going on it. So I added a couple of verses...
These serve as verses 2 and 4:
She were dainty and lissome,
With a smile shy and winsome,
And about her hung the fragrance of salmon and roe,
As she danced her wheelbarrow
'Round the streets broad and narrow,
Crying, "Cockles and mussles, alive, alive-o!"
All the lads would come courtin'
But Molly swore sportin'
Were better than a husband, bringin' worries and woe.
She said, "I'd rather me 'barrow
Make a bed neat and narrow,
'Midst me cockles and mussles, alive, alive-o!"