Flashback: Watch the Judds Roar Through a Live 'Have Mercy'

As the most successful country duo of the Eighties, the Judds racked up an impressive 14 Number One songs between 1984 and 1989 — four of which appeared on the mother and daughter’s debut album Why Not Me.

Wynonna and Naomi easily avoided the dreaded sophomore slump with Rockin’ to the Rhythm,…