Here's a heads-up for people heading to downtown Minneapolis tonight: there may be an unusually large number of nuns along Hennepin Avenue. Maybe an increase in folks wearing lederhosen. The reason? They'll be there to sing along with Julie Andrews in "The Sound of Music." After sold-out runs in London and New York "The Singalong Sound of Music" is opening in Minneapolis tonight. The idea is simple. The full-length feature has the song lyrics subtitled on the screen, so the crowd can sing along. The show is drawing cult audiences, many of whom dress up as their favorite characters, hence the nuns. Tom Lightburn is the producer of the show, and he's come by the studio this morning. Tom Lightburn is the producer of the Sing-Along Sound of Music. The show opens tonight at the Historic State Theatre in Minneapolis with a benefit for the Minnesota Orchestra and the Minnesota Film Board. It will then run from May 3 through May 6.