I know it's probably nothing (again) but I was listining to WWRY and after the first few seconds it sounds like Freddie is saying 'awww' in the background.
Yes, I hear it every time. It's more like he's ad libbing with his voice with a vocal sound between lyrics to emphasize the rawness and energy of the lyrics.
Brian has explained and we've had this topic many times. It's a bit of the count-in "four" that you hear.
If I can find the link where Brian answers this, I'll edit..
This is easily one of the most asked questions on Queenzone.
It is indeed the number "four," the end of counting off the stomps and claps...and it is Brian's voice.
When I first got the CD I was listening to it on earphones and I heard it every time. It was driving me mad because it did indeed sound as though it was coming from outside the phones. Never noticed that Bohemian Rhapsody thing, though...