1. 2024
2. 'Os gwêl Bangor ei debyg eto, bydd gwyn ei byd': Golwg ar gyfraniad J. Lloyd Williams fel Cyfarwyddwr Cerdd a Chyfansoddwr rhwng 1897 a 1914

   Keen, E. (Author), Thomas, W. (Supervisor), Rees, S. (Supervisor) & Ap Sion, P. (Supervisor), 15 Mar 2024

   Student thesis: Doctor of Philosophy

3. 2023
4. The Liturgical Organ Works of Herbert Howells

   Thompson, P. (Author), Llewelyn Jones, I. (Supervisor) & Rees, S. (Supervisor), 23 Mar 2023

   Student thesis: Masters by Research

5. 2022
6. Abodes of Harmony: An investigation of traditional music session culture along the Menai Strait

   Bin Abdul Rais, I. (Author), Rees, S. (Supervisor) & Ifan, G. (Supervisor), 11 Jan 2022

   Student thesis: Doctor of Philosophy

7. The triple harps of Bassett Jones (1809-1869): Context and Organology

   Hockenbury, K. L. (Author), Rees, S. (Supervisor), 2022

   Student thesis: Masters by Research

8. 2020
9. Situating Crossley-Holland's Collection of Ancient Mexican Musical Instruments: Strategies for Interpretation, Dissemination, and Sustainability

   Homer, C. (Author), Rees, S. (Supervisor), 28 Sept 2020

   Student thesis: Doctor of Philosophy