The song of Miriam and Moses help retell the story of liberation from Pharaoh and the systems of slavery.
Many might make the leap to the songs and spirituals from the time of slavery in America and the connection to the songs of Miriam and Moses. And there is some vilidity to that connection HOWEVER.....
THIS IS WHY WE SING! We sing because we praise God for what God does and who God is. Redemption songs remind us that we are not in the place we once were. Redemption songs remind us that we were once enslaved to sin but because God cares for and hears the cries of God's people....these are songs of freedom.