This is the coolest sound check I've ever heard.  He looks like a walking bag of cocaine. 

 

I wonder if some guy was really sneaking around there with a big hand held camera.  Must have been way back in the shadows.  It was pre-mobile phone.

Sneaking? No.  Just like the band doing the sound check,  there was a full camera crew there checking their gear, angles and spots too. There's lot of good film of Stevie Ray and it wasn't by chance.

Mr Prine