The first four of his masses are rather short and are relatively simple. In contrast, in the Missa solemnis in A flat major he sought to attain "the highest in art;" it breaks new ground, especially in its treatment of harmony. Together with the Mass in E flat major, an expressly choral mass, it points to Schubert's late style. The Mass in G major is available both in the version with additions by Schubert's brother Ferdinand, and in a version with the original trumpet and timpani parts, which are handed down in the Klosterneuburg parts. This makes the attractive set of study scores indispensable for scholar and musicians alike.