Weckmann composed chorale preludes and music for the organ and harpsichord that mixes Italian and French influences, various sonatas for three or four instruments, and orchestral and vocal sacred music. Stylistically, he mostly followed the progressive tendencies of Schütz, including the concertato idiom and the trend to increasing chromaticism and contrapuntal and motivic complexity. In this regard, he went against the prevailing trends of the time towards simplification, much of which can be seen in Schütz's later music. Weckmann is a good example of a composer whose works would have been completely lost to history, had it not been for the 19th century interest in researching the predecessors of J.S. Bach
