Music

Imagine being able to rock a piano so well that Aerosmith wants you as its touring keyboardist. That's what happened to Russ Irwin, and he's been sharing the stage with Steven Tyler and Joe Perry for 15 years.

"I'm staring at their backsides," he tells NPR's David Greene. "It's an interesting place to be."

The stories about Robert Johnson (1911-1938) are well known and available in many places. You don’t need me to tell them here. Although I will mention…