Floyd Domino

The writer Lawrence Wright doesn’t seem at all the sort of person you’d find in public wearing a black cowboy shirt emblazoned with big white buffalos. He’s shy, soft-spoken, a little professorial. But as if he didn’t have enough to do, besides working on three plays simultaneously and getting ready to publish a new book in two weeks, Mr. Wright has been taking piano lessons with Floyd Domino, the two-time Grammy winner, and on a recent Saturday, in his buffalo shirt…