Browse Items (2 total) Tags: Muthallath Browse All Browse by Tag Search Items Browse Map Sort by: Title Creator Date Added Muthallath - the triangle as a liturgical instrument in Coptic worship. Library of Congress archival sound files. Tags: Muthallath, p Triangle Index, unique - Library of Congress archival sound files, unique - triangle as liturgical instrument Coptic Monks Praising God Tags: angel, Muthallath, object_liturgical instrument, open triangle, unique - Coptic monks as angels, unique - triangle as liturgical instrument, zero rings Featured Item Romberg’s Toy Symphony at St. James’s Hall