Multi-instrumentalists Mark Schatz and Bryan McDowell had the top album (Grit & Polish) and were the most-played artists on folk radio during June 2021, while singer-songwriter Jackson Browne’s “My Cleveland Heart” was the month’s most-played song. 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. [Click on the headline to continue reading this article and to view the top albums, songs and albums charts that are posted with permission.]