BLUE HILL — Bagaduce Music continues its popular Second Wednesday House Party series on April 8, featuring Massachusetts-based duo Dearest Dear with a 5 p.m. Balfolk workshop and 7 p.m. concert (a change to an earlier start) in Blue Hill. Rooted in New England’s rich folk traditions, Dearest Dear blends traditional tunes from Ireland, New England, Quebec and France with luminous vocal harmonies that bring new life to centuries-old songs. Fiddler…