I ended up going and had a better time than I thought.
Here is Barchi Nafshi:
And here is Chad Gadyah, performed by Cantors Alberto Mizrahi and Jackie Mendelson:
They had about 70 cantors from the US and Canada come and while most of the songs were in Hebrew, there were a couple that were a mix of Hebrew and English and one song each in Russian, Yiddish (although this was a medley of songs), Ladino and Spanish.
In addition, the Cantor's Assembly gave composer/conductor Charles Fox an award and he conducted the philharmonic in a new composition of his music from the movie Victory at Entebee.