This cycle is inspired by Olivier Messiaen’s eponymous musical piece. I became acquainted with this music while Roel Dieltiens and I were working together. He was studying the cello part of the Quattuor. The source of Messiaen's music is to be found in a fragment of the Apocalypse mentioning an Angel, standing with one foot in the sea and one foot on land. This impressive image guided me as did the timbres and musical structures and particularly the emotions that this piece of music arouses.