March 11, 2015 03:30 PM

No one is more excited about Christina Milian‘s new role than her 5-year-old daughter Violet.

The singer had “so much fun” lending her voice to Nickelodeon’s Dora and Friends: Into the City!, in which she plays a mean mermaid, la Sirena Mala, who steals everyone’s treasures in “Magical Mermaid Adventure.” (Spoiler alert: Dora and her friends must transform into mermaids themselves to save the day!)

“Violet loves Dora and when she heard the music recording I did for the episode, she memorized it and had me play it on repeat every day,” Milian, 33, tells PEOPLE exclusively. “Seriously, it’s so cute! She and I will have a great time watching this episode.”

Evans Vestal Ward/Nickelodeon

Milian’s appearance on the preschool series will air Friday, March 20, at 12:30 p.m., as part of Nickelodeon’s Magic Mermaid-themed hour, which includes PAW Patrol “Pups Save a Mer-Pup” at 12:00 p.m.

— Anya Leon

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