Duff McKagan’s column runs every Thursday on Reverb. He writes about what music is circulating through his space every Monday.Dio, “The Last In Line,” Last In Line, 1984: My part in this “summer music playlist” it is going to be a touch bittersweet as it turns out. Last weekend, Ronnie James Dio succumbed to his battle with stomach cancer. From what I understand, Ronnie fought like a warrior to the end.I was supposed to pick a new-ish song for this list, but when it comes to rocking out in the summertime, sometimes you just got to go a little bit old-damn-school. “Last In Line” is an ass-kicker right up there with anything, punk, rock, and/or metal, and us rockers owe a bit of reverence to this great man. R.I.P., RJD!