In 1976, Rita Moreno had already won an Oscar, a Grammy, and a Tony. She won her first Emmy for a performance that year on The Muppet Show in which she sang "Fever" with Animal accompanying on the drums. She remembers the recording session in detail.
And when I watch myself—’cause I’m usually so critical—but when I watch myself, I just laugh at me. What I love about it is that my character’s trying so hard to be sexy and sultry. And this horrible creature in back of me is acting up. [Laughter] See? I can’t stop laughing. It tickles me to death.