Question: When was the band for which Bob Welch was a guitarist formed ?
Related documents: [0]  [DOC] Fleetwood Mac are a British-American rock band, formed in London in 1967. The band have sold more than 100 million records worldwide, making them one of the world's best-selling bands of all time. In 1998, selected members of Fleetwood Mac were inducted into the Rock and Roll Hall of Fame, and received the Brit Award for Outstanding Contribution to Music. [END] 
[1]  [DOC] Three Hearts is the second solo album by rock musician and former Fleetwood Mac guitarist Bob Welch. [END] 
Answer: 
1967
1967