There are several bands named Blowback. 1) A stoner rock band from Sweden. They play a "Sabbath meets Dozer" kind of stoner which means heavy riffing mixed with lots of groove. 2) A political hardcore band started in DC (Black Flag/DOA/MDC style). BLOWBACK plays many of it its shows at protests or activist gatherings. 3) A hardcore punk band from Nigata, Japan. They toured the US with Tragedy in spring 2008.