https://youtu.be/LNXeuUtyD0o
Op. 31 Volume 1 24 Pieces en Style Libre by Vierne #3 Complainte (Lament). This piece features a sinple melody transcribed several times. Once in minor, inverted and finally rewritten in a chorale style. This piece seems easy, but its not. Precision is needed to ensure the simultaneous playing of the melody in hands and feet.