“California’s Sean and Sara Watkins are akin to royalty in American folk circles, firstly as founding members of the hugely successful Nickel Creek, and secondly as hosts of an 18-year residency at LA’s Largo club, where they perform alongside invited guests. Brother Sister draws on both strands of their history. Like its self-titled 2015 predecessor, the album sets aside the pizzazz of Nickel Cree”