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 Audience Participation Sacred Related works Concertino for Piano and String Orchestra Fiori Musicali for string orchestra Jubilate Deo for SSA choir and orchestra Pray For Peace for mezzo and piano Winter and Rough Weather for SAB chorus and piano Zhivago's Christmas Star for soprano and piano or orchestra