4. Harmonisation of a melody from Apparition du Christ glorieux, 1st movement of Eclairs sur l’au-delà...
After analysing Messiaen’s harmony and voice leading in the two chorales of La Transfiguration, I tried to harmonise a melody by Messiaen in the style of the chorales in La Transfiguration. I choose the start of the first movement of Éclairs sur l'au-delà..., Apparition du Christ glorieux because the character of this melody is similar to the melodies of the chorales in La Transfiguration. While making this harmonisation, I avoided the influence of Messiaen’s own harmonisation: I did not look at the original score but I tried to use the same elements as Messiaen did in the chorales in La Transfiguration, which are as follows:
- to harmonise the melody in an entirely homorhythmic way
- to use the following intervals between bass and soprano: the majority m7, m3/m10, M3/M10 and m6
- to use modes 2 and 3 in all transpositions possible
- to use accords spéciaux, especially accords tournants
- to finish the majority of the cadences on the same major triad, which is also the tonic of the chorale
- to use ‘resonant chords’ to complete a mode or to create a complete 11 or 12-tone set
- to use common tones between chords or to employ the absence of a common tone in order to create contrast between chords
- to harmonise or vary a repeated melody in either the same or a different way.
- to use a chord with a high cardinality number as the penultimate chord of the cadence
- to create the climax by using chords with the highest cardinality within a phrase
- to create chords out of different layers connected to the keyboard
- to ensure that the individual layers are all playable at the keyboard
By using these elements as guidelines, I did not aim to create a Messiaen chorale, but instead a harmonisation of a melody in the style of Messiaen. From a pedagogical perspective, the undertaking of this type of exercise could also be useful for students because it could improve the understanding of Messiaen’s harmonic language and way of composing in the context of the chorale.
Next to this text, an annotated score of my harmonisation is shown. In the recording that I made, my wife Suzanne Taylor played the 'third hand' in bars 14-16.