Forty  students from the Jerusalem Academy of Music and Dance took a  classical approach to the flashmob as they flashwaltzed Tchaikovsky's  Waltz of the Flowers at the new Sarah Wetsman Davidson Hospital Tower  in Jerusalem .

 
Doctors,  patients and    passers-by joined in the  fun. 

 
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.

 
On  this day volunteers reach out to the less fortunate and the  vulnerable. 

 
The  Academy students enjoyed the day so much that they have decided to  schedule regularconcerts  at the hospital.  Hadassah Medical Organization treats over one  million patients annually, without regard to race, religion or  national origin.