Miley Cyrus performed at the Rock in Rio Music Festival in Lisbon May 29, 2010.This music festival is one of the biggest in the world. With seven editions to date – three in Brazil, three in Lisbon and one in Madrid – Rock in Rio has brought together over 4.5 million people. The TV broadcast of Rock in Rio was seen by over one billion viewers in more than 70 countries. With this amount of attention, the Rock in Rio festival aims to promote a “better world”.Through music, this event intends to educate, create awareness and initiative, and help mobilise the younger generations to protect the environment. The “City of Rock” comes to life again in June 2010, with more great bands, with numerous tents for every musical taste, and lots of other attractions within the Parque da Bela Vista.