With regards to scoring my category, I am listening to all and ranking over the next few days. I then intend to play them to my partner - asking her solely if she thinks it is a male or female vocalist. All the ones she says are female go below the ones she says are male. I've realised on first listen that I'm struggling to identify the ones that sound on the line between male and female, and because I know they're all females...you get the point.