[Geoff Bacon]

You could probably use a csv file to import the song; this could specify the page range for each chunk of songs. This would have the advantage of there being a single physical file.

Alternatively, if you only have a couple of files like this, it might be easier to split the file outside MSP and just import each bit as a separate file; this eliminates the need to crop out unwanted pages for each song. It also makes it easier to replace a portion of one of the songs (although this is unlikely to be an issue for you if you aren't adding more pages to song).
This would use similar storage to using a .csv

The easiest approach is probably to do what others have suggested - basically, just import the song multiple times and set the page range to remove unwanted pages. This will use more storage than the methods above but this should be be marginal if the file is chordpro or possibly a pdf. Might be more significant if you are using scanned images.

I suspect using the "Create Snippet" option in MSP just references the original source file rather than creating a separate file ie. this would be like using the csv option. Might be a bit more effort if you need to change the page range in one of the middle chunks.

Cheers
Geoff