Work Mass For Unity for congregation and keyboard Year: 1966 · Duration: 8m Year: 1966 Duration: 8m John Ritchie Composer Composer: John Ritchie About Work About Commissioned note Commissioned by Auckland Roman Catholic Diocese Related tags Sacred Audience Participation Related works Album Leaves for solo guitar Christmas Eve for SATB unaccompanied Here's to the maiden for TBB choir and piano Introduction and Allegro for euphonium and piano Three Caricatures for piano Two's Company for two guitars, strings and harp