Jagmo, born Nels Jacobson, is a US artist and poster art historian born in Chicago in 1949. He moved to Austin, Texas in 1978 and began creating rock posters in 1981. For three years during the early 1980s Jacobson served as bar manager and promotional director for Austin's Club Foot. He has designed posters for live-music venues such as Liberty Lunch, Cain's Ballroom and The Fillmore, and for performers such as Stevie Ray Vaughan, the Ramones, Divine, Roky Erickson, Etta James, Dead Kennedys, the B-52's, Bonnie Raitt, Joe Ely, Los Lobos, the Pixies, Iggy Pop, Willie Nelson, Fela Kuti, Jimmie Dale Gilmore and Jerry Jeff Walker. In 1987, Jacobson helped organize the Texas-U.S.S.R. Musicians' Exchange tour of the Soviet Union and accompanied the performers to Leningrad, Moscow and Kyiv. He was art director for South by Southwest (SXSW) during its first six years, designing the original logo, and in 1998 founded the SXSW Continuing Legal Education program, which he continues to oversee in 2019. Jacobson has served on the packaging Grammy Award committees for the Texas and San Francisco chapters of the National Academy of Recording Arts and Sciences, and is a founding Director of the American Poster Institute and the South Austin Museum of Popular Culture, and a board member of The Rock Poster Society (TRPS).