OK, I'm changing this question a little bit since I've discovered a problem with the root of the question assuming the lyrics in the song are "feathers on my breath". Apparently this is a big debate and a lot of people think the lyrics are "fearless on my breath". So which is it, feathers or fearless?
I should note that I've listened to all the covers of this song listed on Wikipedia and three of them use "fearless" and two use "feathers", also one of the ones that uses "fearless" messes up the line "love is a doing word" as "love is a dying word".
As a note, I'm of the opinion that the lyrics are "feathers on my breath" and that the pronunciation is simply strange enough to sound like "fearless". I'm not interested in speculative answers, I need a scan of a lyrics insert or an official source or statement from someone.