Producing primarily pop-flavored country music has rarely been a ticket to immortality for even the biggest artists, particularly the female ones. Imports like Shania Twain and Olivia Newton-John are labeled impostors. Faith Hill’s canny song sense is overlooked while hubby Tim McGraw’s is widely praised. Brilliant Dolly Parton records like “Here You Come Again” and “9 to 5” are cited as being beneath her greatness, rather than prime examples of it. Only Patsy Cline has been given a free pass, and who wouldn’t want to claim those pipes?