“Fifty Artists, One Day” is the claim, but will someone force a recount? Whatever the numbers, the names featured in this “virtual festival to get out the vote”—among them Dave Matthews, Phil Lesh, Bob Weir, Peter Yarrow, Diplo, Foo Fighters, the Blind Boys of Alabama, Preservation Hall Jazz Band, and that proofreader’s bugaboo, Portugal. The Man—might tempt even a Republican to donate (to CivicGeorgia and the Georgia Coalition for the People’s Agenda) in order to get the livestream link. —E.E.

Streaming worldwide.