The Belgian organist and composer Jacques-Nicolas Lemmens (1823-1881) ranks among the most important organ teachers of the 19th century. A student of Adolf Friedrich Hasse in Breslau, he was familiar with the Bach organ tradition but also had a decisive influence on the French organ tradition. From 1849-1869 he was a teacher at the Conservatoire of Brussels and in 1869 he founded his own important church music school in Mechelen ('Lemmens Institute'). His 'Ecole d'orgue', published by Schott in 1862, has now been re-published as a reprint edition due to great demand.