Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- British Broadcasting Corporation. Central Music Advisory Committee, 1 canlyniadau
- Committee for the Promotion of New Music., 1 canlyniadau
- Composers' Guild of Great Britain., 1 canlyniadau
- Guild for the Promotion of Welsh Music., 1 canlyniadau
- Swansea Amateur Symphony Orchestra., 1 canlyniadau
- Jones, Daniel, 1912-1993 -- Archives., 1 canlyniadau
- Mathias, William -- Musical manuscripts., 1 canlyniadau
- Mathias, William -- Archives., 1 canlyniadau
- Pob un
- Cantatas -- Wales -- 20th century -- Scores., 2 canlyniadau
- Chamber music -- Wales -- 20th century -- Scores., 2 canlyniadau
- Choral music -- Wales -- 20th century -- Scores., 2 canlyniadau
- Concertos -- Wales -- 20th century -- Scores., 2 canlyniadau
- Operas -- Wales -- 20th century -- Scores., 2 canlyniadau
- Orchestral music -- Wales -- 20th century -- Scores., 2 canlyniadau
- Organ music -- Wales -- 20th century -- Scores., 2 canlyniadau
- Piano music -- Wales -- 20th century -- Scores., 2 canlyniadau
- Sacred music -- Wales -- 20th century -- Scores., 2 canlyniadau
- Drawing -- Wales -- 20th century., 1 canlyniadau
