GCSE drama play ideas!

Basically, I need two similar plays to perform in Easter for our drama groups for our GCSE. They have to seem quite mature, so we can show serious facial expressions, though including a bit of dancing and singing would be nice. Oh, also our group is mainly split with equal numbers of boys/girls, though if neccessary, people would be open to drag?!

If you have any ideas, here's what we can't do... :/

- Can't have a cast of more than 16 for one paly, and 20-25 for the other group
- Not anything too recent (eg. in the West End) due to problems with performance licenses
- And it has to be family friendly!!!

Any help would be great!!