Duluth-based alternative rock band Indecent Proposal will play 2nd Street Stage on Thursday, June 25. The Park Rapids Downtown Business Association (DBA) is hosting the free, outdoor concert from 6 to 8 p.m. in the second block of Main Avenue South, with a beer garden and social hour opening at 5 p.m. Bring your own lawn chair. According to a DBA news release, the band "blends modern alt-rock, groove-driven covers and emotionally grounded origin…