PLENTITUDE. InstaPundit links a Chris Mooney column in the Boston Globe about cultural economist Tyler Cowen. It's a brief tour d'horizon of the gains and losses from international diffusion of culture. Cowen has been active in obscure corners of economics for some time, I recommend his Theory of Market Failure for beginning readers.
There is a deeper research question in the column I linked. Is the Baumol productivity phenomenon for the arts really an accurate description? A Beethoven symphony takes as long to play today as it does in 1814. Today, as the columnist notes, it isn't much of a leap to supporting state subsides of orchestras. 'Swar immer so, nicht wahr? There is a reason people refer to the "Rasumovsky" quartets.