The New York Philharmonic has put all of its numbers online with its Performance History Search. You can search by composer/arranger, a specific performing artist, or by program history. A treasure trove of information about one of America's oldest, most highly esteemed arts organizations (the data is complete all the way back to their first concert on Dec. 7, 1842!).
(I haven't started digging in yet, but am betting I'll be disheartened by the large-scale programming trends. I'll have another post soon on what I find.)
Also, NY Times article about it here.

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