Victoria's Ave Maria, like many works of sacred music of the Renaissance, begins with a chant intonation and then continues with a chant influence. Victoria's Ave Maria is one of my favorite versions.
Fortunately for our choirmaster that's not a problem. He can sight read and transpose at the same time, and also create musically- and historically- appropriate transitional filler between two works on the fly.
We were torn between the Victoria "Ave Maria" and the Hassler "Dixit Maria" for this venture, decided the Victoria was more appropriate since we're not quite into Advent yet.