Two members of the Russian punk rock band Pussy Riot, who were recently released from prison, will appear at an Amnesty International concert in New York tonight. Maria Alekhina and Nadezhda Tolokonnikova made their first public appearance in the United States on Tuesday, arriving to take part in Amnesty International's "Bringing Human Rights Home" concert in Brooklyn. Madonna will introduce them on stage.

The women were released in December after nearly two years in prison following a conviction for hooliganism when they staged a protest in a Russian church, wearing balaclavas and screaming lyrics.

They have been critical of Russian President Vladimir Putin and political conditions in their homeland, and blasted their release as an attempt to quiet criticism of human rights issues in Russia before the games in Sochi, which open Friday.

The concert is the first Amnesty International has held since its "Human Rights Concerts" from 1986 to 1998, whose performers included Bruce Springsteen, Sting and Peter Gabriel, among others. Other acts scheduled to take part in Wednesday's concert are Imagine Dragons, The Flaming Lips, Lauryn Hill, The Fray, Tegan and Sara and Colbie Caillat.