Ask Doug Burnside how he handles it,

"Ask and ye shall receive..."

Probably what I do won't be what you want, but for what it's worth, here it is.

I use much less elaborate song titles. In your example, my song title would be simply:

Mozart-Symphony #39 1st mvt.

The reason I incorporate the composer name in the title is... otherwise I would have dozens of identical song titles. I mean, how many "Symphony #3 2nd Mvt" are there?

For the remainder of the information you have in your title, I just use the "Comments" field (or whatever it is called) and if I ever need to know who the conductor and orchestra etc. are, I just use the full info-display screen on the Rio.

tanstaafl.