This is the last time Phoebe uses her Levitation power.
The calendar states it's Jan 1967 & while patty was not shown, it's implied that she's a child. Yet Prues headstone says she was born in 1970.
Title based upon the 1960's concert Woodstock.
When Grams is singing while holding Wyatt, the words she is singing do not match up with her mouth movements.