Oh say can you sing? The Boston Celtics are holding an open call today from noon-5 p.m. for solo performers, groups, instrumentalists, and other “unique” folks of all ages who perform the National Anthem in the Gahden for the 2012-2013 season. The details can be found here. Head over to the Hard Rock Cafe and show ’em your talent (it’s a cappella and on a first-come, first-serve basis, so tell your boss the Celtics need you).

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