According to their web site Koolulam is a Musical initiative aimed at empowering communities and strengthening fabric of society.
Their projects center around mass singing events in which large groups of non-professionals come together to form a collaborative musical experience. Their goal is to simply stop everything for a few hours and just sing - together.
Now listen as they bring together a group to sing this beautiful song that commemorated the 70th anniversary of the state of Israel, performed in 2018.