There is one change for sisters that is extremely slight but completely throws off rhythm.
In normal mode, once the Hymn attack goes off and everyone waits in the aura, after it finishes there is a delay until the next Hymn timer appears, giving the team time to set up.
In Hard mode, there is no delay. As soon as the aura disappears, the next timer starts immediately.
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-blam!-, some people take there sweet ass time.
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