>
>
> p.s.  What about the works that were never written by composers that 
> died young?  I'm really quite crushed by the work that Purcell didn't 
> get to write.  I was wondering the other day what Mozart's music of 
> 1820 might have sounded like

That is a separate list from things that may actually turn up - like 
the missing 80% of Blasco de Nebra's harpsichord oevre, or a folder 
containing all the annual occasional pieces Rossini composed for his 
dogs' birthdays (according to Sir Arthur Sullivan (witnessed by 
Dickens))