Just about any ensemble can play James Rae's jazz arrangements of the very familiar tunes - Oh when the Saints; Swing low, Sweet Chariot and The Camptown Races. Solo parts are written out, but also include chord symbols for improvisers. The instrumental parts vary somewhat in difficulty, although not overly demanding for a music classroom or dedicated amateurs. The score includes five parts  of variable instrumentation, along with piano and drums. Parts are available as a download from the publisher's website.