FREE classical midi files -
You get a free share every month...
some of the files are very very good, and can be used for making scores.
Just import into Notion or Symphony Pro.
A cool thing to do is to load a midi file of Wagner, Mahler or some slow moving music, into Cubasis or Auria.
Assign synths to the voices instead of the orchestra instruments. Some tracks, like violins, you can merge and play as strings.
ISymphonic is really king, it's auv3, and you can Lias in many voices...
Or use Model 15 as lead voice or bass... Kinda Wendy Carlos on iPad, but she didn't have midi back then.