Instruments of Time and Truth joins Summertown Choral Society for Handel’s timeless Coronation Anthems, composed at the accession of George II in 1727, and Haydn’s Missa in Angustiis (“Mass for Troubled Times”), which, through a string of coincidences surroundings its first performance in 1798, became indelibly associated with Horatio Nelson’s victory at the Battle of the Nile, earning the nickname “Lord Nelson’s Mass”