Lang Lang (b. 1982) is a classical pianist from China. Lang appeared in Sesame Street Episode 4084. He was seen in a Healthy Moment with Elmo to show how exercising to music is great way to keep in shape and is fun too. He was seen almost near the end of the episode, auditioning for Oscar's Grouch Symphony Orchestra.

Bob is amazed that Oscar and the Grouches are making Lang audition, but Lang concedes by playing Rachmaninoff's "Rhapsody on a Theme of Paganini" and Liszt's "Hungarian Rhapsody No. 2." The performances are so beautiful that he doesn't make it into the grouch orchestra until he leans his elbows on the piano keys in defeat. Intrigued by this new development, Oscar invites him to join the orchestra in a rendition of Blechtoven's 9th Symphony for Two Elbows in E Very Flat Minor.

Lang rejoined the cast for the Sesame Street float in the 2008 Macy's Thanksgiving Day Parade, playing solo during the song "Songs".