Trout’s backstory is a page-turner you won’t want to put down. Five decades in the making; it is equal parts thriller, romance, suspense and horror. There are musical fireworks, critical acclaim and fists-aloft triumph, offset by wilderness years and brushes with the jaws of narcotic oblivion. There are feted early stints as gunslinger in bands from John Mayall’s Bluesbreakers to Canned Heat, and the solo career that’s still blazing a quarter-century later.