As mentioned, it is impossible to provide a complete picture of performance practice during this time due to a lack of references that describe both how instruments were played and how they sounded. However, it does seem evident that medieval audiences preferred to use a variety of instruments with various tonal colors. The celebrated composer Guillaume de Machaut describes a fourteenth century concert in which 31 different instruments were used in an ensemble by a total of over fifty performers.7 The enormous color possibilities of such an ensemble must have been intriguing, but one can only imagine what kind of intonation problems arose!