The membership of the Hee Haw Gospel Quartet over its nearly 25 years on the air was fluid, the constants being co-host Roy Clark and series regular Grandpa Jones (co-host Buck Owens left the series before it ended). At various times, the group included other members of the cast (i.e. Kenny Price) and selected guests.
In this case, Tennessee Ernie Ford joins Roy, Buck, & Grandpa for "Hallelujah Square", a perfect start on this Easter morning. Grandpa & Ernie on lead vocals.
God bless one and all.