Customers who purchase large and/or small ensemble music expect a Score and a set of Parts to be delivered together. When selling music of an ensemble with a Score and set of Parts, both the score and all parts need to be in one single PDF.
We strongly advise against offering any Parts individually, or "a la carte," that belong to an ensemble, as this causes customer confusion and should be avoided.
You may, however, offer your Score as a separate product. Some customers may wish to purchase it for study or analysis purposes, which is why we offer the Ensemble: Score Only option for this type of product. This Score-only option is also useful if you wish to offer a score that is a larger size or different format than what is included in your Score+Parts product.
We highly recommend that all pages in a PDF have the same layout, either landscape or portrait. The watermark is not optimized for PDFs containing different page layouts, which could result in some of the music being obscured by the watermark.