The CD Lumière et Paix just was recently released. It features the ensemble Trecanum and the portative organ performer Cristina Alís Raurich. It contains liturgical chants of the Middle Ages.
In this video you can listen one of the tracks, the sequence Hodierne lux diei performed on the portative organ.
Trecanum: dir. Etienne Stoffel
Solist: Marie-Reine Demollière
Portative organ: Cristina Alís Raurich
Sound engineer: Jean-François Felter