A free-for-all TOD:
Someone asked a question on CastRecL regarding "In-One" numbers, referencing MY FAIR LADY and "I've Grown Accustomed to Her Face". Another person said "On the Street Where You Live" and "Show Me" are textbook "In-One" numbers.
I swear I have never heard the term, and I couldn't come up with a search string in Google that worked. So here I am, hat in hand and suitably embarrassed, in search of enlightenment...