PULP Summer Slam is produced to cater to the readers of PULP Magazine, an eccentric music magazine in the Philippines that feature rock and metal bands. Produced by PULP Magazine publisher Vernon Go, PULP Summer Slam during its early years always falls on April 30 which is also the date when the Church of Satan was founded. The relevance of the date to the PULP Summer Slam is due to PULP Magazine's early nature – controversial and gory photo shoots were often featured on the cover. PULP Summer Slam is famous for gathering more than 30 bands in its line up every year, as well as the 30,000 or more rock fans who show up every year. Many rock fans from all over the country come to this one day show and dress in costumes or bizarre outfits. Often referred to as "The Slam", PULP Summer Slam has become an annual tradition for rock fans in the country.
