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Cure Muse detaches her Cure Module on her chest and calls upon Shiry. Shiry lands on the space on the Cure Module and Muse materializes yellow bubbles using the Fairy Tone's powers before she plays a tune. The bubbles change into note-like forms and Muse declares the attack name before launching them into the Negatone. The bubbles surrounds the Negatone, encasing it in a large bubble.
Cure Muse draws a triangle with her Cure Module and finishes the attack. A purification explosion occurs, purifying the Negatone back into a scattered note.
Cure Muse: おいで、シリー！
Cure Muse: シの音符のシャイニングメロディー。
Cure Muse: プリキュアスパークリングシャワー！
Cure Muse: 三拍子！ 1･2･3！フィナーレ！
Cure Muse: Oide, Shirī.!
Cure Muse: Shi no onpu no shainingu merodī.
Cure Muse: Purikyua Supākuringu Shawā!
Cure Muse: San byōshi! Ichi..ni..san! Fināre!
Cure Muse: Come here, Shiry!
Cure Muse: The Shi note's shining melody.
Cure Muse: Pretty Cure Sparkling Shower!
Cure Muse: 3/4 beat! 1...2...3! Finale!
- This is the third of six attacks in the Pretty Cure franchise that utilizes the word "shower". The first is Cure Berry's Espoir Shower, the second was Cure Blossom's Blossom Shower and followed by Cure Happy's Happy Shower, Cure Diamond's Diamond Shower and Cure Princess's Arabesque Shower (in her Sherbet Ballet form).
- This is the second attack in the Pretty Cure franchise that requires the season's respective transformation device. The first being Milky Rose's Blizzard and Metal Blizzard.