Don Hollinger was an American soul and rhythm and blues singer known for his emotive vocal style in the mid-20th century. He is most recognized for his recordings in the 1960s, with notable songs such as "I Had A Nightmare" and "Sleepless Nights". His music is characterized by raw emotion and deep soulful tones, often reflecting the struggles and experiences of his time. Despite not achieving widespread fame, Hollinger's influence is seen in the soul and R&B genres, contributing to the richness of the musical era.