Never underestimate the power of a guy and a guitar — at least not when it’s John Hiatt. He walked out on the stage of the Lobero last week as casual as can be, without any introduction whatsoever.

“Let’s go to WeHo in the meantime” doesn’t have the same ring to it, but legendary singer-songwriter and longtime Tennessean resident John Hiatt returned to his old haunts in L.A. to be serenaded by a ...