The surprise concert was part of Good Deeds Day, an annual event that originated in Israel in 2007 and now takes place in over 50 countries worldwide.
The Academy students enjoyed the performance so much that they have decided to schedule regular concerts at the hospital. The Hadassah Medical Organization [in Jerusalem] treats over one million patients annually, without regard to race, religion or national origin. ~ IsraPundit
I hope you will visit IsraPundit for several other remarkable videos posted along with the FlashWaltz, including the Israeli-developed "ReWalk" which allows those with disabilities of the lower limbs to walk. Fascinating information here.