Dr. Knight was a member of the Invincibles, an R&B vocal trio from Los Angeles, California, USA. The falsetto lead in soul music was especially strong in the genre of stand-up vocal groups, and from the groups of the 60s, the Invincibles were perhaps one of the greatest practitioners of the falsetto-edged vocal harmony style.  

The group members were David Richardson, Lester Johnson, and Clifton Knight. The Invincibles best work was demonstrated on two superb hits. Heart Full Of Love” from 1965, and “Can’t Win” from 1966, both of which went beyond mere sweetness to exhibit deep, soulful feeling.

Consecrated a Bishop in the church of God in Christ International on August 5, 2007, in the national convocation held in Jonesboro Arkansas, at the national headquarters. Chief Apostle and Senior Bishop John H. Davis.