Horn Rock, also known as brass rock, is a sub-genre of rock music that prominently features brass instruments like trumpets, saxophones, and trombones. Emerging in the late 1960s to mid-1970s, it is characterized by its fusion of rock and roll with elements of jazz, soul, and R&B. Notable bands such as Chicago, Blood, Sweat & Tears, and Tower of Power have significantly influenced this genre, often boasting multi-instrumental band members. The genre's signature sound is defined by rich, harmonious brass sections, often layered over rock rhythm sections and punctuated by jazz-influenced improvisation.