Mark Murphy was an American jazz singer renowned for his unique vocal style and improvisational skill. Rising to prominence in the 1960s, Murphy was influenced by bebop and cool jazz, incorporating both into his vocal phrasing and scat singing. Significant for his ability to use his voice as an instrument, he is particularly known for albums like "Rah" and "Midnight Mood". Murphy's innovative approach and distinctive vocal stylings significantly influenced later generations of jazz vocalists.