A "double drum" refers to a type of percussion instrument that consists of two cylindrical drums, typically played together. These drums can vary in size and material, producing different sounds when struck. Double drums are often used in various musical genres, including traditional music, marching bands, and orchestras. In some contexts, the term "double drum" can also describe a specific playing technique where a drummer uses both hands to strike two drums simultaneously. This technique enhances rhythm and adds depth to the music, making it a popular choice among drummers and musicians in live performances.