Robin Gibb was one of the most popular and most celebrated pop musicians of the '60s, '70s, and 80s. As a member of the Bee Gees, he sold over 100 million records worldwide during the course of a career in which he sang lead on many of their great pop hits, such as "Massachusetts," "I Gotta Get a Message to You," "I Started a Joke," "New York Mining Disaster 1941," and "How Can You Mend a Broken Heart." While Gibb's falsetto became the Bee Gees' signature during the disco era, it was Robin's quietly passionate tenor that defined their first run of hits, and his harmony vocals ...