Part of what makes modern bluegrass interesting is the way it balances progress with tradition. The artists here aren’t trying to gut the form, but they aren’t building a museum to it, either. If anything, consider this a demonstration of how far bluegrass has stretched into country, folk, and Americana while still retaining its shape: mountain music for modern people. Our editors update picks regularly, so if you hear something you like, add it to your library and rejoin the porch.