Sometimes it's not easy to walk in parental footsteps, especially for gifted children of the famous. But if they're fortunate, their own art can be a guide out of the shadows. This is the inspirational path actor/singer/songwriter Marc Arthur Miller has taken in his show Soul Searching, a son's journey to know his father, Motown's mega-charting songwriting icon, Ron Miller. Soul Searching, with Miller and his top-fli…
