Smuggled video from inside an infamous Iranian prison captured the moment six dissidents broke into song to defy the Islamic regime one last time before they were hanged.

The six men, all executed for their alleged actions against the regime, were seen standing in a courtyard at the notorious Ghezel Hesar prison as they made their final stand with a song of resistance.

“Your rival stands before you now, hardened in the flame — I am the faith, I am revolt, with belief I take my stand — I’ve sworn an oath upon my blood, the tyrant’s throne shall shatter,” the men calmly sung.