Rena Mizushiro sits in a cramped position with other puppeteers as she works her character, Teena, to sing in a scene about Elmo's birthday in "Sesame Street."
Stretching her strained arms and legs, Mizushiro then watches a nearby monitor while the scene is replayed for a check-up.
"The expression of the puppet changes with a slight difference of action," Mizushiro says. "I am starting to create unique gestures for my character."
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