NEW YORK (AP) — There are friends you work with — and friends you don’t work with. And while Emmylou Harris and Rodney Crowell have been friends for nearly four decades, they had never worked together. Until recently, anyway. A few years back, they did an album together — and “Old Yellow Moon” went on to win a Grammy. That led to another project that’s out now. “The Traveling Kind” sees them make their working relationship even closer; they wrote seven of the album’s 11 songs together. By contrast, on their first album together, they didn’t team up on any of the writing chores. The album featured covers and some songs Crowell wrote himself.