Complex sentence: He became a noted anti-apartheid campaigner, writing the song "Free Nelson Mandela" about the jailed South African ANC leader; plus organizing the Nelson Mandela 70th Birthday Tribute concert, which was broadcast worldwide from London's Wembley Stadium, on June 11,1988.
Split into simpler sentences: He became a noted anti-Apartheid campaigner, writing the song "Free Nelson Mandela" about the jailed South African African National Congress leader. He also organized the Nelson Mandela 70th Birthday Tribute concert, which was broadcast worldwide from London's Wembley Stadium, on June 11,1988.