The Three Elmos

From Muppet Wiki

The Three Elmos are a trio of opera singers, imagined by Dorothy, in the "Singing" episode of "Elmo's World". As in all of Dorothy's fantasies, the trio look and sound exactly like Elmo, and perform excerpts from "Figaro." The group is a spoof of the singing group The Three Tenors, which included Plácido Domingo, José Carreras and Luciano Pavarotti.