floyd: thank you so much. As you know, sometimes one (at least, I) can get really bogged down in a song, if I've worked on it for too long, and can't see the wood for the trees any longer. So thank you for your perspective on it ... I will work on it at the weekend, I think (sadly, no time before then ... argh).

Marty: thanks so much. Kind, as always. I've added far too much reverb, both on the spoken track as well as on the hummed track - so perhaps that's why the sibilance is there, as you say. I remember a certain singer rehearsing with his band, when the piano player made a major error. He profusely apologised to the singer, and the singer just said: "No worries ... that's why we have rehearsal". That stuck with me ... so, basically, that's why we have this board, thankfully ... to bounce ideas off one another and hopefully improve the "end product" (I hate that phrase, haha). So: THANKS for helping me along! :-)

Billy: thank you. I want to keep a certain bit of "human error" in the song, i.e. an audible breath here and there, but perhaps it still needs some work, so that it's not TOO much? haha. Regardless, thank you for your amazing words - and yes, I agree with you ... sometimes, just sometimes, the message is so much more important than (as you say) the endless search for a better mix.

Thanks, all :-)