Think Stevie Ray Vaughan meets Carlos Montoya — (Not a Medium member? Click to read this story, gratis.) This is a response to one of Caitlin McColl’s “What if…” series, “What if…you could play any instrument like an expert?” I wouldn’t settle for just one, but if I had to, it’d be the guitar Well, first off, I wouldn’t be satisfied with just one; I’d want to play five, the violin, cello, piano…