In 1863, he produced his comic opera Die dreifach Hochzeit im Bäsethal, and in 1879 Der verhäxt Herbst.

He married Marie Damoreau, the daughter of Madame Laure Cinti-Damoreau, the prima donna of Rossini's French operas.

Weckerlin is best remembered for his piano arrangements of traditional French songs, notably the bergerette, a particular kind of pastoral air, originally for voice accompanied by harpsichord, harp or guitar.

Weckerlin became librarian at the Conservatory of Paris in succession to Felicien David, and became interested in research work appertaining to the folk-songs of various countries.

– ÉtudeAmong his works are: His Histoire de l'instrumentation depuis le seizième siècle jusqu'à l'époque actuelle won the gold medal of the Académie in 1875.