Tony Saletan (formerly from Boston, now in Seattle) has been known to sing lyrics of his
own devising to chestnut contras. For example, for Petronella:
You go
'round to the right, and you balance to your partner. You go
'round to the right, and you balance once again. You go
'round to the right, and you balance to your partner. You go
'round to the right, and you balance once again. Now
down the center with your own. Turn around come right back home.
Cast off with the twos and you right and left right over.
Right and left -- go over and go back again... etc.