Gene Chandler sings rainbow 65 

Gene Chandler performing live singing his iconic song rainbow 65
Gene Chandler is an American singer, songwriter, music producer, and record-label executive. Chandler is nicknamed "the Duke of Earl" or, simply, "the Duke." He is best known for his most successful songs, "Duke of Earl" and "Groovy Situation", and his association with the Dukays, the Impressions, and Curtis Mayfield.