Theatre stars perform musical numbers in '4Stars' in Tokyo (11 images)

Four singers from top musicals perform songs from their shows and others in Tokyo on Wednesday. The performers included Ramin Karimloo, Sierra Boggess, Cynthia Erivo and Yu Shirota. The show takes each performer on a journey to find friendship and love. Photos by Keizo Mori/UPI

(L-R) Ramin Karimloo, Sierra Boggess, Cynthia Erivo and Yu Shirota pose for the camera during the press conference.

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Ramin Karimloo is a Canadian-Iranian actor known for his role as the Phantom in "Phantom of the Opera."

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Sierra Boggess is an American theatre actress known for playing Ariel in "The Little Mermaid" and Rosary in "School of Rock."

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Cynthia Erivo is a British actor and singer known for her performance as Celie in "The Color Purple."

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