These are the facts for Coloratura, the biggest pop star in Equestria:
* She is the third pony to have an antagonist as her mentor, following Coco Pommel and Silver Shill (both from Season 4). She is also the last pony to this date.
* She is the only pony to have Lena Hall as her voice actress.
* She holds the record for the shortest tenure out of any musician pony celebrities appearing who have appeared on the show, appearing only in two episodes.
* She is the first pony to be the only pony who has only one voice actress that plays both the foal and adult versions of a pony.
* As Countess Coloratura, she is the first pony to have "Count" somewhere in her name, and the only pony who has "Countess" somewhere in her name.
* She and Prim Hemline are the only pony celebrities from Manehattan.
* She is the only musician from Manehattan (Cheese Sandwich doesn't count, as he currently lives in Ponyville as of The Last Problem).
* She is the first pony to wear see-through clothes.

You can find more facts about Coloratura and Countess Coloratura from here

Next pony for next Saturday will be Cloverbelle.