Sammy Ambrose was a modestly successful soul singer in the 1960s, primarily known for his recording of "This Diamond Ring," a song that became a number one hit for Gary Lewis and the Playboys. His version was well-received in the northern soul scene in the UK, even though it did not achieve significant commercial success in the United States. Ambrose's style was characterized by a smooth vocal delivery and an emphasis on rhythm and blues elements. Despite his limited commercial success, his music continues to resonate with fans of '60s soul and northern soul.