"Loud and Soft" is a Sesame Street song about how two people can sing differently (loudly or softly, high or low), and yet still sing together because they both "like to sing good." Different pairings on the duet have included Bob and Luis (with English and Spanish lyrics), Bert and Farley, Ernie and Bert, and Telly Monster and Baby Bear. (EKA: Episode 3890) Brothers Aaron Carter and Nick Carter also performed the song on the show in a 2003 episode.