Rock music evolved in the 1960s from rock 'n' roll and pop music, developing various styles particularly in the US and UK. It was influenced by genres like blues, folk, jazz, and classical music. Rock music had a big impact on fashion and music video production. It is seen as having a positive social impact through events like Live Aid. The music is popular among younger generations, especially white youth, and emphasizes masculinity with mostly male-based bands. Some iconic rock bands are The Beatles, known for changing rock music forever, and Nirvana, led by Kurt Cobain. Rock music includes many genres such as alternative rock, dance rock, electronic rock, funk rock, and glam rock.