Inmates in a South Carolina prison made history when they managed to sneak in a cellphone or some other video recording device and record the first ever rap music video while inside a prison cell.  It was a group of 6 men (7 including the cameraman) all going off spitting the hook "I'm on fire, I'm on fire," repeatedly before one of them went off dropping bars.  Three inmates in total spit bars worthy of a music studio, while the others maintained a background beat for the men to rap over.

They were all full of energy as they jumped around the cell letting their musical talents be heard even while behind bars.

Source: Bossip.com