Nashville singer-songwriter Jim Lauderdale is often cited as one of the forerunners of the alternative country movement, and one can certainly hear the roots of Jay Farrar’s heartfelt twang in Lauderdale’s steady strumming and striking singing voice. He’s flown primarily under the radar throughout his fruitful 35-year music career, providing both support and inspiration for artists who would go on to become better known, but Lauderdale has cranked out a series of essential releases over the past few years, including several collaborations with legendary Grateful Dead lyricist Robert Hunter. Local songwriter Jim White, another under-the-radar talent who’s rightly revered in certain circles, opens Friday’s show.