(Photo credit: 21C Media Group) Chicago Symphony Orchestra (CSO) announced its 2023-24 MusicNOW series will open with the “Montgomery and the Blacknificent 7” on Dec. 3. The program is curated by CSO’s Mead Composer-in-Residence and Musical America’s 2023 Composer of the Year Jessie Montgomery. New and recent work by members of the Black composers’ collective known as the Blacknificent 7 {…}