1. Published

   Le Cheval Gris.

   ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2003

   Research output: Non-textual form › Composition

2. Published

   Towards a Typology of Code mixing in Recent Welsh-language Popular Music.

   ap Sion, P. E. & Ap-Sion, P. E., 29 Oct 2007.

   Research output: Contribution to conference › Paper

3. Published

   Blodwen.

   ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2003

   Research output: Non-textual form › Composition

4. Published

   Nationhood and the Welsh Composer.

   ap Sion, P. E. & Ap-Sion, P. E., 29 Oct 2005.

   Research output: Contribution to conference › Paper

5. Published

   Towards a Typology of Code Mixing in Recent Welsh-language Popular Music.

   ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2006.

   Research output: Contribution to conference › Paper

6. Published

   Welsh music [4] contemporary.

   ap Sion, P. E., Ap-Sion, P. E. & Koch, J. T. (ed.), 1 Jan 2006, Celtic Culture: A Historical Encyclopedia. 2006 ed. ABC Clio, p. 1768-1769

   Research output: Chapter in Book/Report/Conference proceeding › Chapter

7. Published

   ‘Yn y Fro’: Mudiad Adfer a’r Canu Pop Cymraeg yn ystod y 1970au.

   ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2002, In: Hanes Cerddoriaeth Cymru. 5, p. 162-189

   Research output: Contribution to journal › Article › peer-review

8. Published

   Gwales.

   ap Sion, P. E. & Ap-Sion, P. E., 21 Sept 2003

   Research output: Non-textual form › Composition

9. Published

   The Music of Michael Nyman.

   ap Sion, P. E. & Ap-Sion, P. E., 1 Jan 2007, Ashgate.

   Research output: Book/Report › Book

10. Published

    “Only pictures to hear”: Reading Einstein on the Beach through Experimental Theater

    ap Sion, P., 19 Dec 2019, Einstein on the Beach: Opera beyond drama. Novak, J. & Richardson, J. (eds.). Routledge Taylor & Francis, 33 p. (Ashgate Interdisciplinary Studies in Opera).

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review