This work requires a 4-channel sound system. Two front and two back speakers are required. Additional back speakers may be required if there is a balcony in the hall. It is preferable, but not essential, to have the voice and instrumental ensemble amplified discreetly. A digital keyboard with at least 72 keys (used as controller only) is required to play the samples. A computer (with 4-channel out capabilities) loaded with samples and accompanying Max patch is also required. The Max patch and 4-channel samples are available with score/part rental. There should be a skilled sound engineer for set-up and operation.