Al Green, “Greatest Hits,” the Right Stuff. * * * *

As his performance at the Rock and Roll Hall of Fame Museum celebration concert in September reminded us, Green is one of the dozen most captivating singers of the modern pop era, and this already essential “best of” package gets better this time around with the addition of four bonus tracks, including the magnificent “Belle.”

Albums are rated on a scale of one star (poor), two stars (fair), three stars (good) and four stars (e x cellent).