That one is not a dolphin voice, but a coloratura soprano. The person who sang that part was Inva Mulla Tchako, but I personally think that the latter part had too much electronic processing and the traces were too obvious.

If the previous paragraph is lyrical, then it is an excerpt from "Oh giusto cielo! ... Il dolce suono" from the opera "Lucia di Lammermoor".

If the latter section adds electronic music elements, it is "The Diva Song".

A similar coloratura aria with many skips is undoubtedly "Der holle rache" ("The Flame of Revenge Burns in the Heart") from Mozart's opera "The Magic Flute", and the more lyrical one is "Nightingale" (Russian song "Nightingale") "Caro nome" ("Dear Name", from Verdi's opera "Rigoletto"), as a singer I recommend the coloratura queen Edita Gruberova. There are also "Song of Laughter" and "Con The "Beauty" in "Teed" is also played by a coloratura girl.

If you need it, I can send it to you~ Some resources are hard to find.