Sea Blue. Catalog Number: A 726624 Color: Blue Format: LP UPC: 081227815332 Fleetwood Mac are a British-American rock band formed in July 1967, in London. The band has sold more than 100 million records worldwide, making them one of the 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.