Tim Grimm, a southern Indiana-based folk-Americana singer-songwriter, had the top album (Gone) on folk radio during 2021, edging out upstate New York-based singer-songwriter Reggie Harris’ Solid Ground. The Accidentals, a Michigan-based band, had the year’s most-played song (“Wildfire”), while the late Nanci Griffith was 2021’s most-played artist. So say charts compiled by Folk Alliance International based on radio playlists submitted to FOLKDJ-L, an electronic discussion group for DJs and others interested in folk-based music on the radio. [The FAI Folk Charts are posted with permission. Click on the headline to read an accompanying article, view the charts, and hear some music.]