One thing that Rick Derringer could never be accused of is failing to be eclectic. Having recorded everything from MOR adult contemporary to bubblegum pop/rock to ballsy blues-rock over the years, the singer/guitarist has demonstrated that eclectic is his middle name. And Derringer's blues-rock/hard rock output is the focus of The Three Kings of the Blues, a best-of collection that Blues Bureau International assembled in 2010…..