While performing in West Virginia, Hart was discovered by Lawrence Welk who was there for a luncheon on behalf of the Cancer Crusade.

Impressed with his talent, the maestro signed him as a member of the Champagne Music Makers, where he made his first network television appearance in July 1969.

During Hart's time on the show, he was nominated for the Grammy Award for Best Male Country Vocal Performance for his 1969 single "Spring",[2] but lost to Johnny Cash.

He released a solo album, Clay Hart: Most Requested Country Favorites from the Ranwood Records label.

The two later became a country singing duo that has opened for stars such as Mel Tillis, Red Skelton, and Juliet Prowse.