Trying to find a story, I can't remember much about it although I do remember that Pinkie Pie enjoys listening to Rarity sing while she's working, and at one point during the story she stopped singing and it makes Pinkie Pie sad. I would appreciate some help in locating the story.

So noone knows or noone cares. So sad.

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I remember reading that one at some point. I just don't remember the title.