What is the place and purpose of music and dance in the winter's tale?

What is the place and purpose of music and dance in The Winter’s Tale
Introduction: purpose in theatre and widespread use in Shakespeare canon.
In Shakespeare music and song rouses and lulls, comments and contrasts, seduces and subdues, pays tribute and proclaims arrival, signifies magic and mystery, prefigures and foreshadows, forgives and heals.
If music be the food of love, play on. (Twelfth Night I i )
Marina in another late play, “sings like one immortal” and the shipwrecked Pericles is revived. (Pericles)

Song and dance: advances plot, create sense of abundant life, teeming fecundity, joyous celebration, changes tone and pace, celebrates characters, highlights themes. Start with dance:
Clown sets first dance going. This works iconographically. This is happiness, unity, community.
Here a dance of shepherds and shepherdesses.
During it Polixenes asks Shepherd who is dancing with Perdita. Suggestion that Mopsa and Dorcas are ...