Adrian & the Mysterious D were an American DJ duo who helped popularize mashup and bootleg music in America. The duo consisted of Adriana Roberts and Deidre Roberts. Based in San Francisco, the duo founded the Bootie club night in 2003, the first mashup bootleg party in the United States. In 2005, they started a sister Bootie club in Los Angeles, and in 2007, launched Bootie parties in New York City and Paris, and in 2008, Munich and Boston. Bootie Mashup parties and one-offs in other cities followed.