heavy metal

Visitors from a group of end time role gamers enjoy the Wacken Open Air heavy metal music fest on August 2, 2013 in Wacken, Germany. Approximately 75,000 heavy metal fans from all over the world descend every year on the north German village of 1,800 residents for the annual three-day fest.

Patrick Lux/Getty Images

End of time role gamers enjoy the Wacken Open Air music festival on Friday, in Wacken, Germany. About 75,000 heavy metal fans from all over the world descend every year on the village of 1,800 residents for the three-day event.

Members of the robot rock band Z-Machines, guitarist Mach, keyboardist Cosmo and drummer Ashura perform during the band's debut live concert in Tokyo...Members of the robot rock band Z-Machines, guitarist Mach (C), keyboardist Cosmo (L) and drummer Ashura perform during the band's debut live concert in Tokyo June 24, 2013. Three robot rockers took to the stage in Tokyo on Monday to perform three songs, including one in collaboration with Japanese pop girl duo Amoyamo, to a crowd of nearly 100 people.

Toru Hanai/Reuters

Robot rock band Z-Machines performs during the band’s debut concert in Tokyo. Guitarist Mach (centre), keyboardist Cosmo (left) and drummer Ashura took to the stage in Tokyo on Monday to perform three songs, including one in collaboration with Japanese pop girl duo Amoyamo, to a crowd of almost 100 people.