AUBURN, Maine — Hi all. Short and to the point: Bald Hill welcomes longtime friend of the band, fiddler and banjo demon Mike Conant, to the stage here at Gritty McDuff’s Brewing Co. on Friday night. The music starts at 8 p.m. … It’s gonna be wicked cold that night — let Bald Hill warm the soul with its surprisingly hip, blues-inflected newgrass, folk/rock and Americana. Don’t brave such a night alone, at home — come where there are plenty of other bodies huddlin’ and dancin’ together for warmth. Avail yourself of all that, plus south/central Maine’s finest pub fare and craft brews. Hope to see you there.