Echo Mass placitastrails – July 25, 2017 By Janet Jennings. Missa Brevis setting for SATB chorus, unaccompanied. Suitable for concert or liturgy, this setting is accessible and rewarding for singers and listeners. The classic parts of the mass are included, save the credo. 1 to 20 copies – £12.00 21 to 40 copies – £18.00 40 or more copies – £25.00 Add to Cart Checkout Added to cart