Charles-Marie Widor (1844-1937) composed this Mass, Op. 36 in 1978 for the St Sulpice church in Paris. The initial two choirs for which it was composed were comprised of around 200 and 40 voices, while the score for this version is for a choir of baritones and an SCTB choir. The Organ part requires an advanced-level of ability as it contains some difficult parts.

Divided into five sections, the entire work has been transposed one half step lower to avoid the awkward key of F sharp major. These sections are:
1. Kyrie (Moderato  F# minor)
2. Gloria (Vivace  Lento, D major
3. Sanctus (Con brio, A major)
4. Benedictus ( Piú lento, A major)
5. Agnus Dei (Moderato, F# major)

This really delicate and emotive Mass, Op. 36 is a piece that stands out by its majesty.

Charles-Marie Widorwas a great organist who did not only focus on Organ composition. From orchestra pieces to chamber music, he wrote various different compositions, including 10 symphonies for Organ, some Operas, and some Piano Concerti.