I love this song, it is simple and childlike but profound. I especially like this verse:
Have you been half asleep and have you heard voices?
I've heard them calling my name.
Is this the sweet sound that called the young sailors.
The voice might be one and the same.
I've heard it too many times to ignore it.
It's something that I'm supposed to be
.....It sounds like the writers are familiar with hypnogogic hallucinations.