Opus: 26 Written for: soprano, organ Duration: circa 4 min. Details: the twelve-tone row consists for the first part of the Gregorian melody of Tantum Ergo, the second part is the inversion of it. This piece was written for the occasion of the “Festival Nieuwe Muziek” at Boxtel (NL) in 2018, organized by the Brabantse Orgelfederatie.