The multi-source auralisation technique is based on anechoic recordings of each single instrument in the symphony orchestra. Although the accurate synchronisation of the instruments cannot be perfect, the advantages of this technique include increased realism in terms of localisation and apparent source width, and the possibility to compare different orchestra setups and the interaction between the instruments and the hall. In some concert hall designs with audience seats at the sides or behind the orchestra it is particularly interesting to have the possibility to compare in advance different listener positions; the new suggested method should allow to evaluate the balance and blend in such cases. The multi-source auralisation was first presented by the authors in 2007.