As a composer he was instrumental in the evolution of the French symphonic organ style and his works include many pieces for church use, and lighter fare like marches and sorties. It is probably in the latter genre that Lefebure-Wely scored his most enduring successes on the organ, with pieces like the sorties in B flat and E flat. But Lefebure-Wely's output also includes works for orchestra, chamber ensembles, piano, harmonium, and for the theater, most notably the opéra comique Les recruteurs (1861), probably the composer's most ambitious work. Lefebure-Wely inaugurated many organs built by his friend, the iconic Aristide Cavaillé-Coll, who had few, if any, peers in the realm of organ building in the nineteenth century. Throughout his life Lefebure-Wely remained active as both an organist and composer: he held some of the most prestigious organ posts in Paris and produced more than 200 compositions. In addition, he often gave harmonium recitals and was also a gifted pianist. While his reputation as a composer faded after his death, Lefebure-Wely was one of the most respected and popular artistic figures on the Parisian scene of his day, with composers like Franck and Alkan dedicating works to his memory.