Interestingly, though, if this is from the Johnny Cash show, that didn't begin until 1968, and the Statlers were already recording artists on their own. (Their huge "Flowers on the Wall" was released two years earlier.) But they stayed with Cash, to whom they felt great loyalty, until 1971 when it only made sense to finally break off on their own.
But here they all are, with Johnny Cash in the foreground, and everyone else singing backup.
So, here again, is "Daddy Sang Bass." Just 25 years later.