The great composer's work may be for sale and "sell-able", but a great composer cannot be cultivated by money investment. Patronage is for the artist to lead a "worry-free" life but not the flowerbed for artists.

Remember the movie "Amadeus"? even in Mozart's era, there were many more "fashionable" and popular composers and musicians who could sell their music at higher price and led a more luxurious life than Mozart. But only Mozart's music survives to today.

There is one simple way to tell "Pop Arts" and "Classics", if "pop arts" can survive history, they become classic. Mozart's music was a pop-art in his era, and it survives.

Actually, in contemporary music, including pop songs, if they can still be heard 10 or 20 years later, I will regard them as a classic.