Grace rhymes with pace (6,2,6)
I believe the answer is:
poetry in motion
This could be a double definition.
'grace rhymes' is the first definition.
The definition suggests a singular noun which matches the answer.
'pace' is the second definition.
Both the answer and definition are singular nouns.
Perhaps you can see an association between them that I don't see?
'with' is the link.
Can you help me to learn more?
(Other definitions for poetry in motion that I've seen before include "describing ballerina's performance?" , "Travelling beauty" , "Beautiful to watch" .)