If CSO Resound has released this 2009 performance of Verdi’s Requiem to showcase the Chicago Symphony Chorus, it might well have a point. The choral work, warmly recorded in its own discrete acoustic, is first-rate. That, alas, cannot be said of the singing of the not especially well matched solo quartet. The bass Ildar Abdrazakov is fine but in the Requiem’s many sustained high-lying passages soprano Barbara Frittoli has the kind of distracting flutter I get on my FM radio signal when a jumbo jet is grinding overhead (possibly on its way to Chicago). Even Olga Borodina, a noted exponent of the Requiem, is below her best here. As for Muti, many of his tempi are slower than one might have anticipated. Fielding a large chorus and a heavyweight orchestra with German-sounding brass may be a factor. Over the years he hasn’t had much luck with the Requiem on record. On the evidence of this recording, his luck hasn’t changed.