Par ROBIN JEAN-BAPTISTE. This work for organ duet by the French organist Jean-Baptiste Robin was written in 2014. Agartha is a legendary kingdom that would be connected to the five continents through an extensive network of underground tunnels. This work for organ duet by the French organist Jean-Baptiste Robin was written in 2014. Agartha is a legendary kingdom that would be connected to the five continents through an extensive network of underground tunnels./ Répertoire / 2 Orgues