The Greencards are one Australian and two Brits, and their Viridian disc just hit No. 1 on Billboard’s Bluegrass Chart, a fact that many writers have turned into a big deal: Foreigners playing Americana! But there’s nothing strange about this group following in the footsteps of Emmylou, Iris DeMent, and Alison Krauss — the Greencards are just really good at it.
