Dayenu means "it would have been enough." And not in a kvetchy/sarcastic way! Dayenu is a sincere expression of gratitude, of the Jewish people's cup overfloweth.
There are many any verses in the Hebrew proclaiming how it would have been enough just to be brought out from slavery in Egpyt, to get the Torah, to be gifted Shabbat, etc...
In this version, you may sing some, all or none of the traditional verses, but then open it up so Dayenu can...