Complex sentence: The continuo part of BWV 508 is more agitated and continuous in its voice leading than the Stölzel aria; it is uncertain who provided it, as the entry in the Notebook is by Anna Magdalena Bach herself.
Split into simpler sentences: The continuo part of BWV 508 is more agitated and continuous in its voice leading than the Stölzel aria. It is uncertain who provided it, as the entry in the Notebook is by Anna Magdalena Bach herself.