I have a very large, Mozart-shaped hole in my music library. I have made a number of attempts over the years to assimilate Mozart, never with much success - for the most part, the things that I've listened to (mostly symphonies and chamber works), have left me cold. But - prompted by a chance (and pleasant) encounter with a Lucia Popp 'Mozart - Operatic Arias' LP - I thought it was time to give him another crack. Please recommend me some Mozart (specific recordings welcome)