Athens events in early May

I'm coming up to Athens for a mini break from Porto Heli with my parents & looking for some cool things to do other than just the amazing but usual tourist trail. We'll be in town from 5th to 8th & hope to maybe take in a concert or theatre, market or event. If you know of anything please let me know. We'll be staying near Syntagma but can go where the metro/tram/bus takes us!
Thanks everyone!

Hi poseidons.
you can see what's on around Athens in the Events section in xpatathens . com

Enjoy!