Ashlee Simpson's aeroplane

On a first glance at this post's header it probably looks as though the topic would be about Ashlee Simpson's personal aircraft. That, however, is not what I am writing about, and I do not know if Simpson even has her own plane!

Instead, it is about her song "La La". In Simpson's singing I have always heard her use the pronunciation "aeroplane" over "airplane". At first I thought I was mishearing her so I listened more closely, but even with closer attention to the song I continued to hear "aeroplane". I also checked to ensure that she was not putting any emphasis after "air" by saying "air-uh-plane", and I found it still sounded exactly like "air-o-plane". Finally, I checked several lyrics websites and her exact words are as follows:

"You can meet me on an aeroplane
Or in the back of the bus"

I find this interesting because "aeroplane" is the British spelling and pronunciation of  "airplane", which is used in the United States, and Simpson is American. With the exception of someone educating others about differences in spelling and pronunciation, I have never heard any other American besides Simpson say "aeroplane". Evidently Simpson had her reasons for using the British variant (one that comes to mind for me is that it does sound clunkier to sing "airplane" instead, but then if I had heard the song that way to begin with it is what I would have become used to and would not have given it a second thought), but as curious as I am to know exactly what they were I doubt we will learn them; after all, the song was written several years ago, and it is only a minor thing to worry about. Regardless, it is one of those minor facts that I find fascinating.

Listen around the 0:48 - 0:53 marks of "La La" here. Even now I checked a few more times just to ensure she still said "aeroplane", and seven years after I first heard the song I continue to hear that pronunciation.