A few more thing learned recently: Don't Mess Around and The Wobble were covers of singles originally recorded by the Orioles. I don't know if any of the others originated from elsewhere other than the well known tracks at the start; "Hugh" is an original instrumental the group also recorded for Orfeon in Mexico around the same time.
I indexed this knowing there might be debate as to whether this qualifies as a book or not (read description), however it is treated as a book by literature sites and has an ISBN-13 so I decided to index it.