(also Schloesser) was born on 17 November 1800 in Darmstadt as the son of the guest lodge Falk Schlösser. Early on, his musical talent was recognized, he received lessons from the court organist Johann Christian Heinrich Rinck and became Eleve at the violin in the Darmstadt court chapel. Even during this time, compositions of locks are handed down. In 1822 he went to Vienna for further education, where he taught at I.X. Seyfried, J. Mayseder and A. Salieri. Beethoven had a friendly relationship with Beethoven, so he dedicated a small canon to Beethoven, and on his departure in 1825 gave him various recommendations (with a few orders).
In Paris, he studied with the violinist Rodolphe Kreutzer and composition with Jean-François Lesueur.
After his stay in Paris, he went back to Darmstadt court court. In 1846 he became a concertmaster, and in 1856 he became court conductor. His stage compositions met with great applause and were often performed. Locks also often appeared as a soloist. He was an associate of several journals, and later he was a teacher at the Conservatory.
He died on 17 November 1886 in Darmstadt. His grave is located in the Jewish cemetery in Darmstadt.
Schloss's compositions are musically thoroughly worked. His operas are close to the romantic German school (Weber, Spohr) and the French model. The chamber music works show a rhythmically and harmonious sound language. Contemporary judgments boast of "rare refinement and exceptionally fine taste." As an artist, man and teacher, he was very much appreciated.
Concertino for Horn and Orchestra
This concertino for horn was composed in 1825 and printed as Oeuvre 16 by André. It was created in Paris and was dedicated to the hornist Louis-François Dauprat.