Both Disney Hall and the Kimmel Center have recently installed high-class concert organs, and they might be looking for interesting repertory with which to show off their instruments. I would suggest Henry Brant's Orbits, for organ, high voice, and eighty trombones, from 1979. I've never heard it live, and so can't pretend to have experienced it in all its spatial splendor, but the CRI recording gives the impression of a viscerally enchanting, sense-saturating experience. Brant's language is tough, wild, and confrontational, but I'd wager that even the most conservative audience would be carried away by it.