This of the prayer for peace at the end of the Shacharit Amidah has a chorus for congregation/choir that alternates with traditional chazzanut.
The chazzanut sections are set in traditional modes for Ashkenazic settings of Sim Shalom for Shabbat morning Shacharit. The first verse is in Ahava Rabbah mode, the second goes to Hashem Malach (at least, the major-key elements of that), the third to Ukrainian Dorian, and the chatimah back to Ahava Rabbah.
For my demo recording, I transposed it down to Bm so I could sing the high parts, but it really wants a tenor or soprano voice in a higher key. I notated it in Dm (sheet music available on request).