Hi Steven,
Thank you for your observations! My voice is usually not breathy at all...
The Producer (who arranged, recorded, edited, mixed and played keyboards!), asked me to try a new sound I didn't know I had (though I should have known it would be there - I have many colors...). I tried for about half an hour to sing one of the second verse's sentences with the sound I thought he wanted, and after I gave up, that final sound you hear came out. I am really happy I discovered that side of me that I can use in future recordings, but if you like my voice fuller, please take the time to check out our cover of Hanson's MMMBop from 1997.
ConcreteLake - you are the 4th person to notice that! as I explained above, I didn't acually aim for that sound.