Saturday and next Sunday: The musicians of the Minnesota Orchestra, locked out since Oct. 1 in a labor dispute with management, have chosen Beethoven's Ninth Symphony as the centerpiece of their second major self-produced concert, this one led by former music director Edo de Waart and featuring a strong array of singers. Prefacing Beethoven is Bach's wondrous D-minor Concerto for Two Violins, with concertmaster Erin Keefe and her much-loved predecessor, Jorja Fleezanis, as soloists. (8 p.m. Sat., 2 p.m. next Sun. $20-$60. Ted Mann Concert Hall, University of Minnesota, 2128 S. 4th St., Mpls. 612-624-2345 or