He penned numerous works, including most famously a set of cantatas (published between 1706 and 1712).
These provided a fusion of a French with the Italian style then popular at the Regent's court.
Morin noted in the preface to the 1706 edition his efforts "to retain the sweetness of the French style of melody, but with greater variety in the accompaniments, and employing those tempos and modulations characteristic of the Italian cantata." Morin dedicated the volume to his royal sponsor.He published also two famous books of (petits) Motets (1704/2nd ed.