Jim Henson and Kathryn Mullen in Sesame Street: Sing Yourself Silly! (1990)

Sesame Street: Sing Yourself Silly! (1990)

Jim Henson and Kevin Clash in Sesame Street: Sing Yourself Silly! (1990)

Jim Henson and Kathryn Mullen in Sesame Street (1969)

Caroll Spinney in Sesame Street: Sing Yourself Silly! (1990)

Kevin Clash and Caroll Spinney in Sesame Street: Sing Yourself Silly! (1990)

Kathryn Mullen and Caroll Spinney in Sesame Street: Sing Yourself Silly! (1990)

Jerry Nelson in Sesame Street: Sing Yourself Silly! (1990)

Richard Hunt in Sesame Street: Sing Yourself Silly! (1990)

Emilio Delgado and Sonia Manzano in Sesame Street: Sing Yourself Silly! (1990)

Frank Oz, Jim Henson, Kevin Clash, and Caroll Spinney in Sesame Street: Sing Yourself Silly! (1990)