"Baby It's You"

I listened to Please Please Me this morning and noticed a couple small features in "Baby It's You," both in the line "Don't leave me all alone."  "All alone" alliterates, and since there's only one initial sound, there's a representation of that singularity.  "Alone" is also sung with a melisma (D E D E, I think), musically giving a sense of degree (for "all").

In the Shirelles' version, the line is simply "Don't leave me alone."