Johann Georg Albrechtsberger
Albrechtsberger wrote hundreds of compositions. He wrote most of them before he got the job in Vienna.  He wrote in a classical style. Albrechsberger enjoyed doing things with music which were not normally done. He would ask string players to tune their strings in different ways (called “scordatura”). He would also write slow movements with muted strings.  As well as classical sonatas he wrote lots of fugues.  Several people, including Mozart, thought of him as the greatest organist in the world.