By 1767 he was once again in Paris, where he composed music for the stage, both ballets and operas, and horn music and taught.
From 1798 he was a professor at the Paris Conservatory.
He popularized the horn as a solo instrument and was probably the first in Paris to use the technique of hand-stopping, by which a natural horn can be made to produce notes outside of its normal harmonic series.
None of his music survives in the modern concert repertory.