Christopher Lobingier (1944-2014) was a composer based in Baltimore who wrote the original score to the 1977 John Waters film Desperate Living and participated in the Baltimore Composers Forum. This collection contains scores of original compositions by Chris Lobingier, including his score to Desperate Living, as well as materials related to the Baltimore Composers Forum, recordings, and other ephemera.

Enrico Caruso (1873-1921) was one of the most popular operatic tenors of his era. After beginning his career in his native Italy, Caruso immigrated to the United States and became a star at the Metropolitan Opera. His papers include manuscript and published scores belonging to Caruso, photographs, correspondence, scrapbooks and clippings about his career, caricatures and other artwork, recordings, and ephemera.

Hugh Raymond Newsom (1891-1978) was an organist and composer who lived in Baltimore. The collection includes manuscript scores of music composed by Hugh Newsom or by his wife, harpist Marjorie Brunton Newsom; documents related to Hugh Newsom's career; and reel-to-reel recordings of his music.

Jean Eichelberger Ivey (1923-2010) was a composer, pianist, electronic musician, professor, and the founder of the Peabody Conservatory Electronic Music Studio, which she directed from 1969 until her retirement from Peabody in 1997. The Jean Eichelberger Ivey papers contain scores and recordings of Ivey's musical works, writings and notes by Ivey, personal and professional correspondence, programs and clippings, photographs, and other personal and professional papers.

John Charles Thomas (1891-1960) was a baritone who had a lengthy career as an opera singer and recording artist. His papers include scores, personal and business papers, concert programs, clippings, correspondence, ephemera, photographs, and recordings.