The invention relates to a method and system for assessing a performance of a musical composition in relation to a model performance of the same composition. In particular, as even a model performance does not follow a score of a composition precisely, the present invention initially correlates the model performance to a score of the performed composition. This allows for an accurate assessment of the timing of the assessable performance, relative to the timing of the model performance. The invention is of particular use where the assessable performance is performed along with the model performance, but the two performances are remote from each other.