Guest Artists: Two Rivers Chorale, Tim Sawyer, Director. Edina Chorale, Tom Paulson, Director. Tracey Engelman, Soprano. Thomas Glass, Baritone.   Program: Johannes Brahms: Requiem Free. No ticket required. Donations gratefully accepted. Please join us for a reception following the concert.       This activity is made possible by the voters of Minnesota through a grant from the Metropolitan Regional Arts Council, thanks to the legislative appropriation from the arts and cultural heritage fund.