Respuesta :
Hi! Sorry for answering so late, but I believe it is Rubato. Rubato can be defined as slightly speeding up and slowing down for expressive purposes. Hope this helped :)
Answer:
Rubato
Explanation:
RUBATO is a musical term widely used to indicate the speed of a musical text in a "flexible" manner in order to have an expressive effect on the part of the artist.
It comes from Italian, time stolen "tempo rubato", is a term that applies to musical performance and indicates a delay or momentary abandonment of strict tempo - what is "stolen" in duration to one or more notes is "compensated" further up.