The restaurant, bar and concert venue Music Mill plans to shut down next month after a four-year run at 3720 E. 82nd St. near the Fashion Mall at Keystone. The unique concept opened in early 2005 in a former Discovery Zone children’s amusement center. The Music Mill’s lease was up and the sour economy has been taking a toll, said Nick Davidson, one of the owners. The building is owned by locally based The Broadbent Co. A lineup of previously scheduled concerts, including Red Jumpsuit Apparatus and Gaelic Storm, will go on as scheduled. The remaining schedule, which runs through February, can be found here.