Chucho Valdés commands the stage just by walking out onto it. He’s a giant of a musician, in more ways than one, being part of the small cadre of larger-than-life piano colossi — along with the late Randy Weston and Paul Smith — whose physical stature seems like a direct manifestation of their talent. Like Duke Ellington, he’s always the tallest guy in his band, and that’s no small thing.