Louisville singer/songwriter Dave Ernst’s debut album ‘Hickory Switch’ is the culmination of nearly 30 years in music and a tribute to his country and rock roots. The album is a blend of his own well-crafted, well-thought songs along with a nod to Todd Snider (Rocket Fuel), and an acoustic cover of the R.E.M. tune Driver 8, make ‘Hickory Switch’ the kind of album you can put on and let it play. Over and over again. While the album is technically Dave Ernst’s debut, it has been a long time in the making. It’s the distillation of thousands of experiences into 30 minutes of rocking good music. This isn’t an album…