The collection contains scores and parts of original compositions and arrangements by Frederick Slee. It also includes transcriptions of works by composers such as J.S. Bach, Mozart, and Haydn, as well as a lesson for recorder.

The collection contains scores and parts of twenty original compositions by Friedrich Otto Trautmann, a composer and organist who lived in Germany and England in the late nineteenth to early twentieth century.

The collection contains scores of five compositions by John Myhill in varied states of completion and a folder of sketches and musical analyses. The collection also contains a folder of prose writings and a single piece of correspondence to Myhill.