Song as an expression of faith and spirit: The seder is coming to a close and the sound of songs are a celebration of what the ancient Israelites endured on their quest out of bondage and into liberation. Hallel is the song of the seder, the moment where celebration and faith are expressed through joyous songs that commemorate all that was experienced. What makes up Hallel is a group of psalms sung and traditionally sung on Passover as well as Shavuot and Sukkot. In this recognition of the many moments of redemption.