First, algorithmically generating all length 12 sequences of 8 notes (2^36 = 64 G results) is just math, not music composition, even if you encode the results in midi format. Thus, not subject to copyright protection (in the U.S. anyway).
Next, a catalog of 64G entries is not human searchable. It is an unreasonable to state a person searched or could have the catalog, and copied an entry. Perhaps a program containing certain search criteria could scan the catalog looking for entries with "musical" attributes. However, such a program would not need the catalog, because it could generate every entry independently.
Since the output of this effort is neither subject to copyright nor human searchable, the effort will not mitigate copyright law suits. It seems a fruitless exercise. I suppose it was worth thinking about, though.
And that is my opinion.