This is the 17356th most frequent Russian word.
танцевальный
Dance-related; dancing.
Here, 'танцевальный' is used as an adjective to describe a plot related to dancing.
Этот фильм имеет танцевальный сюжет.
This movie has a dancing-related plot.
In this case, 'танцевальная' describes the type of program featured.
На вечеринке была танцевальная программа.
There was a dance program at the party.
Here, 'танцевальное' modifies 'шоу' to show it's a performance centered around dance.