Actors are very cognizant of pace in dialogue ...how fast or slow they speak can alter of a scene. Comedy is almost always faster paced ..this doesn't mean you speak more quickly but that your lines come quickly one upon the other. Or so I understand.
Singers, too, are aware of "pace" if used as a synonym for rhythm. Good example is how different "Bye, Bye, Blackbird" can be when sung slowly instead of in the original quick tempo. Sung fast it is upbeat and optimistic, slowly it is poignant.
Any actors among us who could supply more info on this?
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