I hope this isn't too off topic here, but it's one of the biggest events that happen here and I love sharing it.
Over 20 000 singers (and the 100 000+ spectators who tend to sing along), this is the biggest choral music event in the world. But to Estonians is much more - it's a symbol of nationality and freedom to us. And in ways a weapon.
Sadly I couldn't go see it live this year (it's an indescribable experience to be in the middle of it).
http://otse.err.ee/etv/
You can see it in the above link - it'll start any minute now and last for at least two hours.
Edit: It's started!