I started registering onto dozens of non-exclusive production music sites with the intent of doing some degree of music making and spreading it throughout these libraries. As I already successfully write for several exclusive publishers, I was wondering, what you would consider a good split (in terms of percentage) of number of tracks that one should give to exclusive vs. non-exclusive libraries?
There is no one size fits all to this question as there are just too many factors to consider. And since you just registered on dozens of non-exclusive libraries you can multiply your factors to consider by dozens. For instance, what type of libraries and what size are they? Are they US based or foreign? What type of music are you submitting?