i found this three video about dolphin sound. Here to share with you all


This is Vitas version
He first appeared in Russia in December of 2000 with his hit Opera #2, which was notable for use of Vitas' surprisingly high-pitched and energetic countertenor voice.




This guy name lu guang zhong, his sound not bad too He is trying to act like vitas in this video







This is the most funny voice i encounter in youtube