I agree, that would be nice.

However, I can see how that would be difficult. Although BIAB has some classical support, some classical styles and fake books, one could not really create classical music that way, and I'm not at all sure that could be developed.

Jazz and pop, folk music, etc., is very pattern-based. BIAB can take certain patterns created for a style, and put them together according to the entered chord progression, whether using MIDI, RT, RD, or all of the above, and come up with something that reasonably approaches that style of music.

Most classical music, however, is much less pattern-based, and therefore would be much more difficult to attempt to replicate with a program like BIAB.

It perhaps could work for some kinds of repetitive phrases, but would be hard to implement for a lot of classical music.

For instance, if you were to record patterns for a classical real track, what would you record? Let's say you were to record a violin section of an orchestra, to make a violin section classical real track. What kinds of melodic patterns would you record them playing?

A little different idea--perhaps there could be some pop strings real tracks, recording a string section playing different chord progressions to use in pop backgrounds.