Urgent and dramatic

Certainly a dramatic feel to it! The arrangement sounds nice throughout.

However, it sounds like you've got a bit of a problem with false relations, especially in the main theme/first 4 measures, between the choir and violins. It's essentially a phenomenon where the same scale degree occurs in two forms, in two different parts, simultaneously or close to each other. For example, one part (say violas) play a sustained note on the lowered submediant/6th scale degree, while another (say violins) play a sequence involving the fifth, raised sixth and raised seventh degree.

Ever from the baroque it's been used deliberately to great effect, for example in the form of a trill alternating between the lowered 6th and lowered 7th degree over a dominant 7th chord (the false relation here being between raised 7th and lowered 7th), but taken to its extreme it can invoke an unintended, very funky and odd sensation in the listener.