It hit American Top 40 radio fifty years ago like a thunderclap. When I heard both Chicago powerhouses WLS and WCFL play “Whole Lotta Love” by Led Zeppelin in Fall 1969, it changed my life and forged the template for hard rock/ heavy metal for half a century. Jimmy Page and Robert Plant join me here In the Studio  on Led Zeppelin II‘s  fiftieth anniversary the week of October 21. –Redbeard