In the clip for “Bars,” Jammer musters all sorts of creepy allies: a snake that coils menacingly and flicks its tongue, long-legged spiders, old skulls. The MC raps with stern speed; during one sequence, his eyes appear to roll back into his head. All these MCs think that these hooks can save them, Jammer says with disgust, head in his hand. I don’t want to hear your choruses, he adds. It’s bars for days. Watch the Bipolar Spider-directed video above, and find out how Jammer's DVD series helped shape Grime.