Tarik O'Regan's Mass Observation was commissioned for the University of Michigan Chamber Choir, Jerry Blackstone, conductor, thanks to support from the William K. and Delores S. Brehm Choral Commissioning Fund and the Barbara Abramoff Levy Fund. Composer's note: Mass Observation is a meditation on the histories of our varied ambivalent relationships with surveillance in its myriad guises. The use …