If you go to the St. Thomas Church website, you can listen to The Lent Prose sung - by one of the best choirs anywhere - at Choral Evensong on March 8. (The link they list there is not correct at the moment; here's the right one for that service.) Here's the service bulletin so you can follow along; Evensong is below the main Sunday service.
It may be the case that the choir sings The Lent Prose at all Evensongs during Lent - or it may be only on Sunday, I can't quite remember. In any case Evensong is always worth listening to, so nothing's lost if you tune in to find out.