When you purchase a score for a solo instrument with piano accompaniment, we always provide the audio of the piano accompaniment. However, in some cases the piano part is not included in the score. You can check the score preview before buying the score. If the preview has the piano accompaniment stave, then the audio is included. If the preview does not have the piano accompaniment stave, you will have to purchase it separately in the piano catalogue.
With piano stave
Without piano stave