Tony Hajjar is an American musician and drummer best known for his work with the post-hardcore band At the Drive-In and the rock band The Mars Volta. Born on July 4, 1975, in El Paso, Texas, Hajjar's drumming style is characterized by its complexity and energy, blending elements of punk rock, progressive rock, and experimental music. Hajjar gained prominence with At the Drive-In, which rose to fame in the late 1990s with albums like "Relationship of Command" (2000), featuring hits such as "One Armed Scissor." The band's frenetic sound and innovative approach helped to define the post-hardcore genre and influenced many bands that followed. After the disbandment of At the Drive-In, Hajjar joined The Mars Volta, contributing to their critically acclaimed albums, including "De-Loused in the Comatorium" (2003) and "Frances the Mute" (2005). His work with The Mars Volta further showcased his versatility and ability to adapt to more progressive and experimental sounds. Hajjar's impact on music is marked by his contributions to the evolution of post-hardcore and progressive rock, inspiring a generation of musicians with his dynamic drumming and artistic vision.