My recollection is that the ads for Carnegie Hall in the Arts and Leisure section of the Sunday NY Times used to list the composers for each concert – but this season only a few of them do. It’s another example of our unhealthily performer-centric classical world – the Toscanini effect, I suppose Joe Horowitz would say.
On a related topic, I thought it was odd that no composer is listed in the ads for the new Broadway adaptation of Woody Allen’s Bullets over Broadway as a musical. I had to dig through several sites (including the show’s own site) before finding one mentioning that period music will be used for the show – without saying which composers of the period. More missing composers here, here, here, and here.