WASHINGTON (AP) — Girl Scouts, Little League baseball players and musicians including Phish and Train are joining a national sing-a-long on Saturday, which is Flag Day, to celebrate the 200th anniversary of the national anthem and the flag that inspired its lyrics.

The National Museum of American History is coordinating the celebration with an “Anthem for America” concert on the National Mall.

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Inside the museum, Francis Scott Key’s original handwritten “Star-Spangled Banner” manuscript will be displayed with the flag for the first time. It’s usually housed at the Maryland Historical Society.

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Country singer Carlene Carter, daughter of June Carter Cash, will lead the sing-a-long on the National Mall at 4 p.m. A 400-person choir will also perform “America the Beautiful” and “Lift Every Voice” during an earlier concert. The performances will be streamed live on ESPN3 and YouTube.

Nationwide, 800 Macy’s stores plan to play the national anthem Saturday. Phish, Train and singer Renee Fleming are among 20 musicians recording their own renditions or messages about the flag for YouTube.

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