A beautiful arrangement of the spiritual “Deep River”, which forms the finale of the cantata / secular oratorio “A Child Of Our Time” by British composer Michael Tippett. Performed here in my favourite recording of this piece, given by the London Symphony Orchestra, conducted by Richard Hickox:

 

And from the same work, Tippett’s arrangement of “Steal Away”:

 

More about Tippett’s “A Child Of Our Time” can be read here.