R. Nathan says "bakosharoth": These (the Egyptians) crying ("bacho"); the others (Israel) singing ("meshorerim"). The Egyptians crying, viz. (Numbers 33:4) "And the Egyptians were burying, etc." And Israel singing, viz. (Psalms 118:15) "A sound of song and salvation in the tents of the righteous." (Ibid.) "The right hand of the L–rd is uplifted" — over Egypt.