![Stryper](https://cdn.mos.cms.futurecdn.net/GbnpMbcfhL6A8ES2EdtxNT-320-80.jpg)
Stryper perform with battery-powered practice amps following venue power cut
With miniature amps, a snare drum, and some considerable help from the crowd, the Christian metallers completed a full unplugged set – only for the power to be restored half an hour later