John Lennon
Lennon was a man of the people after he left The Beatles. He did everything for peace and human rights, and his song "Imagine" has lived on to be an anthem for change. Though his work was highly politicized, he earned lots of praise for other songs like "All You Need Is Love."
George Harrison
Another Beatle went on to follow the hippie movement once the band broke up. George Harrison let his hair grow longer, his clothes hang looser, and his spirituality took a turn towards the East. He became a vegetarian and took up meditation, which highly inspired his later music.