6. Fleetwood Mac

Fleetwood Mac originally emerged as a British blues band, but their sound underwent a dramatic transformation with the arrival of Stevie Nicks and Lindsey Buckingham in 1975. Their polished pop-rock approach led to the creation of Rumours (1977), one of the best-selling albums in history, with over 40 million copies sold worldwide. The album spawned chart-topping singles like “Go Your Own Way” and “Dreams,” earning critical acclaim and Grammy Awards. This reinvention not only revitalized Fleetwood Mac’s career but cemented their enduring legacy. Learn more about their evolution at BBC Culture.