A theme in some of the songs on White Album--classical strings endings | Fab Forum | The Beatles Bible

I see it as the session musician experiments gone full circle…  Their first attempt at using strings with ‘Yesterday ‘ was to give the song some more colour and texture, but still keeping them to the background…  In fact ‘Yesterday ‘, musically that is (there’s an innocence lyrically that’s since been lost), wouldn’t be all that out of place on the ‘White Album ‘…  compare it to ‘Mother Nature’s Son ‘ where they both see the first verse “naked” before the musicians then join in…  It’s a refinement of them using the musicians sparingly, or a “less is more” approach…  They went through a time in 1967 where the accompaniment became much more to the fore, a natural direction for the ‘Yesterday ‘ experiment was so successful as they wanted to know more about all of the different instruments at their disposal…  After ‘I Am The Walrus ‘ took things about as far as one could go with it, it was time to “get back to where they once belonged”…

As a result, the scattered overdubs are much more effective in bringing out the songs’ essence here…  They approach the vocal harmonies on the ‘White Album ‘ in much the same way…  I see the “theme” that you’ve identified here with the endings as simply another method of them now knowing when or, more importantly, when not to have the musicians come in…  ‘Blackbird ‘ almost made your list above as well for Paul was contemplating having strings/horns over the bit where it starts back up at the end, but opted to put a real blackbird on instead to great effect…  The only exception to this “theme” is ‘Good Night ‘, but if you look at the entire volume as a whole then they kinda do the same thing here by letting them all come back in at the end of the album…  The ‘Anthology 3 ‘ version of ‘Good Night ‘ would also fit nicely on your list…:-)