Big John Hamilton was an American soul singer known for his deep, emotive vocals that epitomized Southern soul music. Active primarily during the 1960s and 70s, he made significant contributions to the genre, although he never achieved widespread fame. His most notable works include the singles "How Much Can a Man Take" and "Breaking Up is Hard to Do." Despite his relatively low-profile, Hamilton's music has been influential within the soul genre, particularly for its raw power and emotional depth.