The last line, as sung by Vocalot (Linda Hirschhorn, Judith-Kate Friedman & Ellen Robinson) is "Vel ikh kempfn mit gesangen," according to the Vocalot website. But although the Vocalot notes say "In the song, the Eastern European Jew asks the Marrano how he will celebrate Passover. He responds by saying that they celebrate it secretly in a cave where they have hidden their prayer books and bake their matzoth. "And what if the enemy hears you?" asks the Ashkenazi (Eastern European) Jew. "If the enemy hears us we will drown the enemy with our singing," I am fairly sure the correct translation for "vel ikh kempfn mit gesangen" is "I will fight with singing" ("ikh" is "I"; "kempfn" doesn't mean to "drown" but is probably to "struggle" or "fight")