Hi Gavin,
the reason the voice sounds better in the chorus is because Solaria is singing together with Kevin there. If you listen closely, you can hear a male background voice. He’s in the bridge section as well and in the backing vocals (ooh) too.

I agree with you on your lyric thoughts. That explains why songs in foreign languages become hits. Nobody understands a single word. If the phrase is catchy people will sing along or try to sing along. These past years a bunch of Spanish songs have made to the no. one spot in the charts here. Sometimes I ask myself, what in the world is this song about. If you translate the lyrics, who knows, maybe they are singing “Tiptoe through the window – By the window, that is where I’ll be – Come tiptoe through the tulips with me”.

All the best - Robert