What is the name of the opera song that plays in the Taco Bell steak commercial where the guys dives on the guy eating his steak?

The Opera song featured in the Taco Bell steak commercial is "Nessun Dorma" from Giacomo Puccini's opera Turandot. This powerful aria is famously sung by the character Calaf and has become widely recognized in popular culture. The dramatic music complements the humorous scene of the guy diving for the steak.