Cappella Romana – A Byzantine Emperor at King Henry's Court Christmas 1400 London Alexander Lingas, music director and founder At Christmastide 1400 to 1401, Eastern Roman (Byzantine) Emperor Manuel II Palaiologos paid a visit to King Henry IV at Eltham Palace in London. Seeking aid against the Ottomans, the Byzantine Emperor also brought with him clergy and cantors for prayers and services. New discoveries, researched and led by Alexander Lingas, reveal the mix of liturgical music – in Greek and in Latin – that was performed at this double-royal occasion on Old-Style Christmas (modern date of 7 January). WORLD PREMIERE PROGRAM Medieval Byzantine Chant, c.1400 Sarum Chant and Polyphony Music from the Old Hall Manuscript (c.1410-20) COVID Guidelines Proof of vaccination is no longer required for Cathedral events. The CDC and King County Public Health continue to strongly recommend you wear a mask at large indoor events. While not required, we encourage all concert attendees to wear masks while community spread continues. We ask that all audience members be respectful of each other's choices. This policy is subject to change based on Archdiocesan, King County, and Washington State COVID guidelines and regulations.