Labour is blossoming or dancing where
The body is not bruised to pleasure soul.
Nor beauty born out of its own despair,
Nor blear-eyed wisdom out of midnight oil.
O chestnut-tree, great-rooted blossomer,
Are you the leaf, the blossom or the bole?
O body swayed to music, O brightening glance,
How can we know the dancer from the dance?

William Butler Yeats, “Among School Children” (1927)

And with respect to Bridget, where did you think the dance came from, or where might it be going?

Hans Zatzka (1859 - 1945), "The Harem Dancer"

Gaston Guédy (1874 - 1955), "Dançarina de harém"

A theme continued in a more modern visual idiom here, here, and here.  Enjoy!