Klezmer/Yiddish Revival. This is one of my favourite festivals which takes place every two years. It is also the favourite of many other people and as a result, queues are long. You should line up for popular events at least a half hour before they start. Most events are free at Harbourfront.
Yiddish dance, 19th & 20th C. String orchestra music, Lemon Bucket Orkestra. http://bit.ly/1nenk66