Symphonie pour orgue no. 1 en ut mineur, op. 13 / Symphonie pour orgue no. 2 en ré mineur, op. 13

Symphonie pour orgue nos. 1 en ut mineur and 2 en ré mineur, Op. 13 are organ symphonies by Charles‑Marie Widor, composed in 1872. They exemplify late-Romantic French organ writing with multi-movement symphonic structure, prominent pedal and manual writing, contrapuntal textures and rich harmonic colouring, and represent Widor's early efforts in establishing the organ symphony as a distinct genre in his career.