Not quite sure what to make of this, but the Royal Opera House at Covent Garden in London has bought Opus Arte,  a leading for-profit maker and producer of performance DVDs.  The economics of high music culture have changed and more and more music groups of all sizes are moving toward control of production and distribution of their artistic “products,” as traditional avenues like record labels go belly up.  Where is our friend Pliable on this one?   Here’s an update on David Salvage’s piece at the Harvard Club on June 11.  Starting time is 7pm, not 7:30 as we reported here yesterday.  The requirement to dress “spiffy”