Seattle premier bluegrass band Downtown Mountain Boys, consisting of talented, multi-instrumental musicians Terry Enyeart, Dave Keenan, Don Share, Tom Moran, and Paul Elliott, will present a concert for Portland FolkMusic Society on March 10 at Colonial Heights Presbyterian Church, 2828 S.E. Stephens, Portland 97214.  For advance online tickets: portlandfolkmusic.org/concerts.php. Time: 7:30 (doors 7:00)  For info.