Club 7

I've a Club 7 for Voice today.
It goes for two lessons (40 mins each, with my 10 min break inbetween) where it's like a normal Voice class but it's specifically for level 7s (the low, low levels). So it's basically 1hr20 of games.
I've been preparing it slowly over the last few weeks but I'll have no idea how many students there'll be until I walk in the door. So I might have 10... or 1. (or none)