A composer of sacred and secular music including vocal chants, services, anthems, songs and instrumental concertos, sonatas, duets, and voluntaries. Some considered Dupuis to be a brilliant organist illustrated by the fact that he replaced Boyce as the organist and composer of the Royal Chapel, received the Bachelors and Doctorate from Oxford and was lauded with bountiful praise by Haydn. Always with a tendency towards teaching, Dupuis' keyboard compositions were intended with an option toward the piano. Solidly writing compositional harmonies his sacred works were collected and published as "Cathedral Music" after his death by a student J. Spencer. ~ Keith Johnson, All Music Guide