The Poker Face star headlined the packed Camden Rising event with covers of Woody Guthrie's This Land is Your Land and Neil Young's Old Man, after she was introduced by Senator Cory Booker.

Lenny Kravitz, who performed at the DNC on Wednesday night (27Jul16), also hit the stage at Camden Rising, staged hours before Hillary Clinton formally accepts the Democratic Party's nomination for U.S. president nearby.

Katy Perry is expected to perform and speak at the final night of the Democratic National Convention just before Clinton hits the Wells Fargo Center stage.