Rock music in the 1980s and 1990s saw the rise of new subgenres like new wave, hardcore punk, alternative rock, grunge, and Britpop. Popular bands included U2, Metallica, R.E.M., Michael Jackson, and Madonna. Protest songs from this era included "Born in the U.S.A." by Bruce Springsteen and "Sleep Now in the Fire" by Rage Against the Machine. Iconic benefit concerts raised money and awareness for causes like famine relief in Africa and human rights, including Live Aid in 1985 which featured performances by Queen and U2 across stadiums in London and Philadelphia.