1. Cyhoeddwyd

   Timothy A. Johnson, John Adams's Nixon in China: Musical Analysis, Historical and Political Perspectives

   ap Sion, P. E. & Ap Sion, P., 1 Ion 2013, Yn: Journal of the Society for Musicology in Ireland. 8, t. 93-98

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2. Cyhoeddwyd

   Hidden Disunities and Uncanny Resemblances: Connections and Disconnections in the Music of Lera Auerbach and Michael Nyman

   ap Sion, P. E., 27 Hyd 2014, Yn: Contemporary Music Review. 33, 2, t. 167-187

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

3. Cyhoeddwyd

   Parallel Symmetries? Exploring Relationships between Minimalist Music and Multimedia Forms.

   ap Sion, P. E., Ap-Sion, P. E. & Evans, T., 1 Ion 2007.

   Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

4. Cyhoeddwyd

   The Dancer and the Marvellous Mind (10’)

   ap Sion, P. E., 17 Hyd 2014

   Allbwn ymchwil: Ffurf annhestunol › Cyfansoddiad

5. Cyhoeddwyd

   Michael Nyman.

   ap Sion, P. E., Ap-Sion, P. E., Sadie, S. (gol.) & Tyrrell, J. (gol.), 1 Ion 2001, The New Grove Dictionary of Music and Musicians. 2001 gol. Macmillan, Cyfrol 18. t. 247-249

   Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

6. Cyhoeddwyd

   Understanding Minimalist Film Music: The Case of Man on Wire

   ap Sion, P. E., 1 Meh 2012, Yn: Soundtrack. 5, 1, t. 51-66

   Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

7. Cyhoeddwyd

   Gwales.

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

   Allbwn ymchwil: Ffurf annhestunol › Cyfansoddiad

8. Cyhoeddwyd

   Nationhood and the Welsh Composer.

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

   Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

9. Cyhoeddwyd

   Old Avant-Garde, New Musical Concerns: Nyman contra Stockhausen.

   ap Sion, P. E. & Ap-Sion, P. E., 20 Ion 2002.

   Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

10. Cyhoeddwyd

    Towards an understanding of the perception of sounds, silences and repetition in American experimental and minimal music.

    ap Sion, P. E., Ap-Sion, P. E., Evans, T. & Barnett, R., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur