[Geoff Bacon]

I would go for the .csv! ; just experimet with a couple of entries first so that you can see what is required.
You are likely to need a couple of attempts so use the filter mechaism to select the collection/delete the songs prior to reimporting the pdf and .csv

Geoff
PS:  The .csv has to be in the same folder as the .pdf and has to have the same name stem  e.g. mybook.pdf and mybook.csv