It isn't really a "jingle" hardcore music is usually 5 very talented musicians put together. The solos are outrageous and extremely difficult to play and especially keep in rhythm. I was in a band for about 5 years, toured around the south and was amazed by all the local bands that were playing and the dedication put into it. The screaming, half of people can't understand what they are saying but if you pay attention they are usually speaking of life and believes. So next time you hear it or if you ever do, listen and enjoy.