Joe Quarterman and Free Soul were an American funk and soul band active during the 1970s. Known for their high-energy, brass-heavy sound, they were led by singer-songwriter Joe Quarterman, whose socially conscious lyrics distinguished the group within their genre. Their most influential work is arguably "I Got So Much Trouble On My Mind," which has been sampled by numerous hip-hop artists, showcasing their enduring impact on contemporary music. Despite their relatively short career, Joe Quarterman and Free Soul left a significant mark on the funk and soul scene.