Flatt and Scruggs brought bluegrass music into mainstream popularity in the early 1960s with their country hit, "The Ballad of Jed Clampett" — the theme music for the television sitcom "The Beverly Hillbillies" — the first Scruggs recording to reach number one on the Billboard charts. Over their 20-year association, Flatt and Scruggs recorded over 50 albums and 75 singles. The duo broke up in 1969, chiefly because, while Scruggs wanted to switch styles to fit a more modern sound, Flatt was a traditionalist who opposed the change and believed doing so would alienate a fan base of bluegrass purists. Although each of them formed a new band to match their visions, neither of them ever regained the success they had achieved as a team.