Supporting audio files for the thesis: Pitch Drift in A Cappella Choral Singing

Files 1–22 are audio clips taken from the beginning and end of recordings made by 11 choirs (A–K). Each choir is singing the two pieces, 'Test' and 'Song', in up to 20 rehearsals. 'Test' was specially composed for this research and is played in full in files 23 and 24 (with permission). 'Song' is a short a cappella piece chosen by each choir. The details of the audio files may be found in the preamble to the thesis on page xxi, and within the text of the thesis.