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The Grateful Dead's Phil Lesh is helping celebrate the arrival of the band's new signature beer. 

He's hosting the first launch party for Dogfish Head's "American Beauty," a new brew developed by the band with input from the fans. 

The event will take place Tuesday evening at Lesh's Terrapin Crossroads restaurant and performance space in San Rafael, California. 

The party begins with happy hour, featuring "American Beauty" on tap, and includes a free concert from Phil Lesh and The Terrapin Family Band. 

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