Arch Gwyn (Arranger). Par ARCH GWYN. Gwyn Arch presents some hot and spicy choral arrangements of five classics of Latin America, written specially for SATB chorus and guaranteed to thrill and delight at any occasion! The pieces include Sloop John B , Guantanamera and, of course, Jobim's much-loved Girl From Ipanema . Full Piano accompaniments are included where required. Add a funky dash of sunsh…