So, we are 'on the right track', so to speak.
How about Carson Kievman's Symphony No.2 for No.412? It was commissioned by the Florida Philharmonic Orchestra to observe the 200th Anniversary of the death of Mozart (and has been recorded as well!)
This is still incorrect I'm afraid.
You were on the 'right track', but as with all rail systems here it would be much safer to stick firmly to
home!
I was going to give Robin Holloway's brief description of his music as a clue, but when I googled it it led straight to the composer's page as given by his publisher - and I think that is too easy for anyone (especially you Mr Inquisitor!).