Anne Cusack / Los Angeles Times
Ellen Bowker, 14, from left, Lily Desmond, 13, and Gianna Horak,14, practice "Graduation," a piece composed by Gianna at the Waverly School in Pasadena. The piece was performed at the school's graduation this month. Gianna is on a monthlong tour of China, where she was born, with the Los Angeles Children's Chorus.
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