Signum Classics SIGCD499 booklet (in the rip folder as Artwork/SIGCD499.pdf), sessions line: "Recorded at the Church of St. Augustine, Kilburn, London, UK from 16 to 19 October 2016". The 2017 previously held here is the phonogram/release year (the booklet prints (P) 2017 and (C) 2017); day left unset because the sessions span 16-19 October.

Migration: a zero year, month, day or OperaClass id meant the value was unknown, not that it was zero. Set to null.