Tobias Matthay (1858-1945) was a pianist, composer, and music writer. He wrote chamber music, piano, and vocal pieces, as well as books on music technique. Matthay also taught various music students at the Royal Academy of Music and occasionally performed. The collection consists of scores, books, lists, concert programs, and biographical materials related to Matthays career and his relationships with his pupils, including Denise Lassimonne. Tobias Matthay (1858-1945) was a pianist, composer, and music writer. He wrote chamber music, piano, and vocal pieces, as well as books on music technique. Matthay also taught various music students at the Royal Academy of Music and occasionally performed. The collection consists of scores, books, lists, concert programs, and biographical materials related to Matthays career and his relationships with his pupils, including Denise Lassimonne. Tobias Matthay (1858-1945) was a pianist, composer, and music writer. He wrote chamber music, piano, and vocal pieces, as well as books on music technique. Matthay also taught various music students at the Royal Academy of Music and occasionally performed. The collection consists of scores, books, lists, concert programs, and biographical materials related to Matthays career and his relationships with his pupils, including Denise Lassimonne. Tobias Matthay (1858-1945) was a pianist, composer, and music writer. He wrote chamber music, piano, and vocal pieces, as well as books on music technique. Matthay also taught various music students at the Royal Academy of Music and occasionally performed. The collection consists of scores, books, lists, concert programs, and biographical materials related to Matthays career and his relationships with his pupils, including Denise Lassimonne.